./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.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_aa978139-2a2c-49e1-affd-6dcc6e152363/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/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 15c2a0dbf98e8d278e41c47d311b6d4dc752a8f7 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: no XNF --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-19 23:08:06,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:08:06,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:08:06,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:08:06,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:08:06,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:08:06,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:08:06,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:08:06,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:08:06,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:08:06,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:08:06,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:08:06,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:08:06,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:08:06,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:08:06,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:08:06,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:08:06,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:08:06,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:08:06,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:08:06,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:08:06,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:08:06,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:08:06,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:08:06,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:08:06,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:08:06,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:08:06,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:08:06,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:08:06,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:08:06,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:08:06,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:08:06,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:08:06,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:08:06,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:08:06,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:08:06,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:08:06,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:08:06,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:08:06,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:08:06,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:08:06,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-19 23:08:06,441 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:08:06,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:08:06,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:08:06,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:08:06,443 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:08:06,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:08:06,443 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 23:08:06,443 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 23:08:06,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:08:06,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 23:08:06,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:08:06,444 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-19 23:08:06,445 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-19 23:08:06,445 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-19 23:08:06,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 23:08:06,445 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 23:08:06,445 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 23:08:06,445 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 23:08:06,446 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:08:06,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:08:06,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:08:06,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 23:08:06,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 23:08:06,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 23:08:06,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:08:06,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 23:08:06,447 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 23:08:06,447 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 23:08:06,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 23:08:06,448 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_aa978139-2a2c-49e1-affd-6dcc6e152363/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 -> 15c2a0dbf98e8d278e41c47d311b6d4dc752a8f7 [2019-11-19 23:08:06,605 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:08:06,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:08:06,621 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:08:06,622 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:08:06,623 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:08:06,623 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/bin/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-11-19 23:08:06,674 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/bin/uautomizer/data/e6a34b11e/1bb0e8581f374c36b337623800276eef/FLAGaae013799 [2019-11-19 23:08:07,094 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:08:07,095 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-11-19 23:08:07,106 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/bin/uautomizer/data/e6a34b11e/1bb0e8581f374c36b337623800276eef/FLAGaae013799 [2019-11-19 23:08:07,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/bin/uautomizer/data/e6a34b11e/1bb0e8581f374c36b337623800276eef [2019-11-19 23:08:07,411 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:08:07,413 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-19 23:08:07,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:08:07,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:08:07,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:08:07,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:08:07" (1/1) ... [2019-11-19 23:08:07,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46596362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:08:07, skipping insertion in model container [2019-11-19 23:08:07,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:08:07" (1/1) ... [2019-11-19 23:08:07,426 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:08:07,457 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:08:07,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:08:07,879 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:08:07,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:08:07,998 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:08:07,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:08:07 WrapperNode [2019-11-19 23:08:07,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:08:07,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:08:08,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:08:08,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:08:08,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:08:07" (1/1) ... [2019-11-19 23:08:08,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:08:07" (1/1) ... [2019-11-19 23:08:08,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:08:07" (1/1) ... [2019-11-19 23:08:08,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:08:07" (1/1) ... [2019-11-19 23:08:08,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:08:07" (1/1) ... [2019-11-19 23:08:08,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:08:07" (1/1) ... [2019-11-19 23:08:08,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:08:07" (1/1) ... [2019-11-19 23:08:08,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:08:08,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:08:08,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:08:08,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:08:08,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:08:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/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 23:08:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-19 23:08:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:08:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-19 23:08:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-19 23:08:08,132 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-19 23:08:08,132 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-11-19 23:08:08,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-19 23:08:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-19 23:08:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-19 23:08:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-19 23:08:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-19 23:08:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-19 23:08:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-19 23:08:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-19 23:08:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-19 23:08:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-19 23:08:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-19 23:08:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-19 23:08:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-19 23:08:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-19 23:08:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-19 23:08:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-19 23:08:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-19 23:08:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-19 23:08:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-19 23:08:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-19 23:08:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-19 23:08:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-19 23:08:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-19 23:08:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-19 23:08:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-19 23:08:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-19 23:08:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-19 23:08:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-19 23:08:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-19 23:08:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-19 23:08:08,138 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-19 23:08:08,138 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-19 23:08:08,138 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-19 23:08:08,138 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-19 23:08:08,138 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-19 23:08:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-19 23:08:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-19 23:08:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-19 23:08:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-19 23:08:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-19 23:08:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-19 23:08:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-19 23:08:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-19 23:08:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-19 23:08:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-19 23:08:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-19 23:08:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-19 23:08:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-19 23:08:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-19 23:08:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-19 23:08:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-19 23:08:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-19 23:08:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-19 23:08:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-19 23:08:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-19 23:08:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-19 23:08:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-19 23:08:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-19 23:08:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-19 23:08:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-19 23:08:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-19 23:08:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-19 23:08:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-19 23:08:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-19 23:08:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-19 23:08:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-19 23:08:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-19 23:08:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-19 23:08:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-19 23:08:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-19 23:08:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-19 23:08:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-19 23:08:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-19 23:08:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-19 23:08:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-19 23:08:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-19 23:08:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-19 23:08:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-19 23:08:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-19 23:08:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-19 23:08:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-19 23:08:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-19 23:08:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-19 23:08:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-19 23:08:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-19 23:08:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-19 23:08:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-19 23:08:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-19 23:08:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-19 23:08:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-19 23:08:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-19 23:08:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-19 23:08:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-19 23:08:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-19 23:08:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-19 23:08:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-19 23:08:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-19 23:08:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-19 23:08:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-19 23:08:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-19 23:08:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-19 23:08:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-19 23:08:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-19 23:08:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-19 23:08:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-19 23:08:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-19 23:08:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-19 23:08:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-19 23:08:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-11-19 23:08:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 23:08:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-19 23:08:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-19 23:08:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-19 23:08:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-19 23:08:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-19 23:08:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 23:08:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-19 23:08:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:08:08,442 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-19 23:08:08,772 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:08:08,772 INFO L285 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-19 23:08:08,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:08:08 BoogieIcfgContainer [2019-11-19 23:08:08,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:08:08,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 23:08:08,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 23:08:08,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 23:08:08,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:08:07" (1/3) ... [2019-11-19 23:08:08,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bd2d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:08:08, skipping insertion in model container [2019-11-19 23:08:08,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:08:07" (2/3) ... [2019-11-19 23:08:08,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bd2d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:08:08, skipping insertion in model container [2019-11-19 23:08:08,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:08:08" (3/3) ... [2019-11-19 23:08:08,781 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-1.i [2019-11-19 23:08:08,790 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 23:08:08,797 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 24 error locations. [2019-11-19 23:08:08,806 INFO L249 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2019-11-19 23:08:08,823 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 23:08:08,824 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-19 23:08:08,830 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 23:08:08,830 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:08:08,830 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:08:08,831 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 23:08:08,831 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:08:08,831 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 23:08:08,848 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2019-11-19 23:08:08,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-19 23:08:08,855 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:08:08,856 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:08:08,857 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 23:08:08,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:08:08,862 INFO L82 PathProgramCache]: Analyzing trace with hash 231074615, now seen corresponding path program 1 times [2019-11-19 23:08:08,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:08:08,871 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1694585032] [2019-11-19 23:08:08,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/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 23:08:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:08:09,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 23:08:09,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:08:09,149 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 23:08:09,149 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:09,156 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:09,156 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:09,156 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 23:08:09,168 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 23:08:09,169 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:08:09,178 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 23:08:09,179 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1694585032] [2019-11-19 23:08:09,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:08:09,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-19 23:08:09,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3271065] [2019-11-19 23:08:09,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 23:08:09,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:08:09,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:08:09,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:08:09,199 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2019-11-19 23:08:09,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:08:09,351 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2019-11-19 23:08:09,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:08:09,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-19 23:08:09,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:08:09,358 INFO L225 Difference]: With dead ends: 68 [2019-11-19 23:08:09,358 INFO L226 Difference]: Without dead ends: 60 [2019-11-19 23:08:09,359 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 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 23:08:09,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-19 23:08:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2019-11-19 23:08:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-19 23:08:09,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2019-11-19 23:08:09,393 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 10 [2019-11-19 23:08:09,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:08:09,395 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2019-11-19 23:08:09,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 23:08:09,395 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2019-11-19 23:08:09,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-19 23:08:09,397 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:08:09,397 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:08:09,607 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:09,608 INFO L410 AbstractCegarLoop]: === Iteration 2 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 23:08:09,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:08:09,608 INFO L82 PathProgramCache]: Analyzing trace with hash 231074616, now seen corresponding path program 1 times [2019-11-19 23:08:09,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:08:09,609 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1519930590] [2019-11-19 23:08:09,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/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 23:08:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:08:09,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 23:08:09,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:08:09,799 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 23:08:09,800 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:09,807 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:09,808 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:09,808 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 23:08:09,823 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 23:08:09,823 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:08:09,875 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 23:08:09,875 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1519930590] [2019-11-19 23:08:09,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:08:09,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-19 23:08:09,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572571020] [2019-11-19 23:08:09,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 23:08:09,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:08:09,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 23:08:09,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 23:08:09,878 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 4 states. [2019-11-19 23:08:10,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:08:10,093 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2019-11-19 23:08:10,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:08:10,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-19 23:08:10,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:08:10,095 INFO L225 Difference]: With dead ends: 57 [2019-11-19 23:08:10,095 INFO L226 Difference]: Without dead ends: 57 [2019-11-19 23:08:10,096 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 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 23:08:10,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-19 23:08:10,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-11-19 23:08:10,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-19 23:08:10,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2019-11-19 23:08:10,103 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 10 [2019-11-19 23:08:10,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:08:10,103 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2019-11-19 23:08:10,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 23:08:10,104 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2019-11-19 23:08:10,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-19 23:08:10,105 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:08:10,105 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:08:10,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:10,314 INFO L410 AbstractCegarLoop]: === Iteration 3 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 23:08:10,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:08:10,314 INFO L82 PathProgramCache]: Analyzing trace with hash 693046669, now seen corresponding path program 1 times [2019-11-19 23:08:10,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:08:10,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [673207031] [2019-11-19 23:08:10,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/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 23:08:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:08:10,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:08:10,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:08:10,575 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:10,576 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 23:08:10,577 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:10,603 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-19 23:08:10,604 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 23:08:10,604 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2019-11-19 23:08:10,625 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 23:08:10,625 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:08:10,636 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 23:08:10,636 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [673207031] [2019-11-19 23:08:10,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:08:10,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2019-11-19 23:08:10,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674247173] [2019-11-19 23:08:10,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 23:08:10,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:08:10,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 23:08:10,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 23:08:10,638 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 4 states. [2019-11-19 23:08:10,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:08:10,836 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2019-11-19 23:08:10,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 23:08:10,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-19 23:08:10,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:08:10,839 INFO L225 Difference]: With dead ends: 63 [2019-11-19 23:08:10,839 INFO L226 Difference]: Without dead ends: 63 [2019-11-19 23:08:10,840 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 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 23:08:10,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-19 23:08:10,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55. [2019-11-19 23:08:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-19 23:08:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2019-11-19 23:08:10,846 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 15 [2019-11-19 23:08:10,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:08:10,847 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2019-11-19 23:08:10,847 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 23:08:10,847 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2019-11-19 23:08:10,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-19 23:08:10,848 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:08:10,848 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:08:11,052 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:11,052 INFO L410 AbstractCegarLoop]: === Iteration 4 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 23:08:11,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:08:11,052 INFO L82 PathProgramCache]: Analyzing trace with hash 693046670, now seen corresponding path program 1 times [2019-11-19 23:08:11,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:08:11,053 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1049453791] [2019-11-19 23:08:11,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/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 23:08:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:08:11,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 23:08:11,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:08:11,262 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 23:08:11,262 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:11,267 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:11,267 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:11,268 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 23:08:11,278 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 23:08:11,278 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:08:11,315 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 23:08:11,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1049453791] [2019-11-19 23:08:11,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:08:11,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-19 23:08:11,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867776404] [2019-11-19 23:08:11,316 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 23:08:11,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:08:11,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 23:08:11,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 23:08:11,316 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 4 states. [2019-11-19 23:08:11,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:08:11,469 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2019-11-19 23:08:11,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:08:11,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-19 23:08:11,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:08:11,471 INFO L225 Difference]: With dead ends: 58 [2019-11-19 23:08:11,471 INFO L226 Difference]: Without dead ends: 58 [2019-11-19 23:08:11,471 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 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 23:08:11,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-19 23:08:11,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2019-11-19 23:08:11,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-19 23:08:11,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2019-11-19 23:08:11,477 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 15 [2019-11-19 23:08:11,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:08:11,477 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2019-11-19 23:08:11,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 23:08:11,477 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2019-11-19 23:08:11,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-19 23:08:11,478 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:08:11,478 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 23:08:11,678 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:11,679 INFO L410 AbstractCegarLoop]: === Iteration 5 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 23:08:11,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:08:11,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1414735189, now seen corresponding path program 1 times [2019-11-19 23:08:11,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:08:11,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [979626304] [2019-11-19 23:08:11,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/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 23:08:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:08:11,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:08:11,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:08:11,895 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 23:08:11,895 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:08:11,958 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 23:08:11,959 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [979626304] [2019-11-19 23:08:11,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:08:11,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-19 23:08:11,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955690143] [2019-11-19 23:08:11,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-19 23:08:11,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:08:11,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-19 23:08:11,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-19 23:08:11,960 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 7 states. [2019-11-19 23:08:12,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:08:12,015 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2019-11-19 23:08:12,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 23:08:12,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-19 23:08:12,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:08:12,017 INFO L225 Difference]: With dead ends: 62 [2019-11-19 23:08:12,017 INFO L226 Difference]: Without dead ends: 58 [2019-11-19 23:08:12,017 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-19 23:08:12,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-19 23:08:12,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2019-11-19 23:08:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-19 23:08:12,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2019-11-19 23:08:12,023 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 19 [2019-11-19 23:08:12,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:08:12,023 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2019-11-19 23:08:12,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-19 23:08:12,024 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2019-11-19 23:08:12,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-19 23:08:12,024 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:08:12,024 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:08:12,227 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:12,227 INFO L410 AbstractCegarLoop]: === Iteration 6 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 23:08:12,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:08:12,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1677900577, now seen corresponding path program 1 times [2019-11-19 23:08:12,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:08:12,228 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [969197949] [2019-11-19 23:08:12,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/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 23:08:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:08:12,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 23:08:12,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:08:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:08:12,498 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:08:12,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:08:12,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [969197949] [2019-11-19 23:08:12,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:08:12,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-11-19 23:08:12,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568305858] [2019-11-19 23:08:12,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-19 23:08:12,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:08:12,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-19 23:08:12,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-19 23:08:12,668 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 9 states. [2019-11-19 23:08:12,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:08:12,845 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2019-11-19 23:08:12,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 23:08:12,849 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-11-19 23:08:12,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:08:12,850 INFO L225 Difference]: With dead ends: 67 [2019-11-19 23:08:12,850 INFO L226 Difference]: Without dead ends: 63 [2019-11-19 23:08:12,851 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-19 23:08:12,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-19 23:08:12,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2019-11-19 23:08:12,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-19 23:08:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2019-11-19 23:08:12,855 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 24 [2019-11-19 23:08:12,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:08:12,855 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2019-11-19 23:08:12,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-19 23:08:12,855 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2019-11-19 23:08:12,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-19 23:08:12,858 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:08:12,859 INFO L410 BasicCegarLoop]: trace histogram [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 23:08:13,062 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:13,062 INFO L410 AbstractCegarLoop]: === Iteration 7 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 23:08:13,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:08:13,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1615547285, now seen corresponding path program 2 times [2019-11-19 23:08:13,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:08:13,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1482902444] [2019-11-19 23:08:13,064 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/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 23:08:13,289 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 23:08:13,289 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 23:08:13,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 23:08:13,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:08:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:08:13,354 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:08:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:08:13,564 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1482902444] [2019-11-19 23:08:13,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:08:13,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-11-19 23:08:13,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379632823] [2019-11-19 23:08:13,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-19 23:08:13,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:08:13,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-19 23:08:13,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-11-19 23:08:13,565 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 11 states. [2019-11-19 23:08:13,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:08:13,785 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2019-11-19 23:08:13,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-19 23:08:13,797 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2019-11-19 23:08:13,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:08:13,798 INFO L225 Difference]: With dead ends: 72 [2019-11-19 23:08:13,798 INFO L226 Difference]: Without dead ends: 68 [2019-11-19 23:08:13,799 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2019-11-19 23:08:13,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-19 23:08:13,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2019-11-19 23:08:13,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-19 23:08:13,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2019-11-19 23:08:13,804 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 29 [2019-11-19 23:08:13,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:08:13,804 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2019-11-19 23:08:13,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-19 23:08:13,805 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2019-11-19 23:08:13,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-19 23:08:13,805 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:08:13,806 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:08:14,008 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:14,008 INFO L410 AbstractCegarLoop]: === Iteration 8 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 23:08:14,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:08:14,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1872558433, now seen corresponding path program 3 times [2019-11-19 23:08:14,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:08:14,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [398994658] [2019-11-19 23:08:14,009 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/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 23:08:14,175 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-19 23:08:14,175 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 23:08:14,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 23:08:14,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:08:14,222 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-19 23:08:14,222 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:08:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-19 23:08:14,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [398994658] [2019-11-19 23:08:14,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:08:14,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-11-19 23:08:14,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192010449] [2019-11-19 23:08:14,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-19 23:08:14,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:08:14,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-19 23:08:14,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-19 23:08:14,310 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 7 states. [2019-11-19 23:08:14,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:08:14,706 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2019-11-19 23:08:14,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 23:08:14,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2019-11-19 23:08:14,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:08:14,708 INFO L225 Difference]: With dead ends: 62 [2019-11-19 23:08:14,708 INFO L226 Difference]: Without dead ends: 62 [2019-11-19 23:08:14,708 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-19 23:08:14,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-19 23:08:14,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2019-11-19 23:08:14,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-19 23:08:14,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2019-11-19 23:08:14,712 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 34 [2019-11-19 23:08:14,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:08:14,713 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2019-11-19 23:08:14,713 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-19 23:08:14,713 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2019-11-19 23:08:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-19 23:08:14,714 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:08:14,714 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:08:14,917 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:14,917 INFO L410 AbstractCegarLoop]: === Iteration 9 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 23:08:14,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:08:14,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1872558432, now seen corresponding path program 1 times [2019-11-19 23:08:14,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:08:14,918 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1709194901] [2019-11-19 23:08:14,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:08:15,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 23:08:15,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:08:15,182 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:08:15,183 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:08:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:08:15,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1709194901] [2019-11-19 23:08:15,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:08:15,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2019-11-19 23:08:15,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463259154] [2019-11-19 23:08:15,423 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-19 23:08:15,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:08:15,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-19 23:08:15,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-11-19 23:08:15,424 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 13 states. [2019-11-19 23:08:15,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:08:15,698 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2019-11-19 23:08:15,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-19 23:08:15,699 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2019-11-19 23:08:15,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:08:15,700 INFO L225 Difference]: With dead ends: 74 [2019-11-19 23:08:15,700 INFO L226 Difference]: Without dead ends: 70 [2019-11-19 23:08:15,700 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2019-11-19 23:08:15,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-19 23:08:15,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2019-11-19 23:08:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-19 23:08:15,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2019-11-19 23:08:15,705 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 34 [2019-11-19 23:08:15,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:08:15,705 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2019-11-19 23:08:15,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-19 23:08:15,705 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2019-11-19 23:08:15,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-19 23:08:15,706 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:08:15,707 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:08:15,907 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:15,907 INFO L410 AbstractCegarLoop]: === Iteration 10 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 23:08:15,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:08:15,908 INFO L82 PathProgramCache]: Analyzing trace with hash 33071574, now seen corresponding path program 2 times [2019-11-19 23:08:15,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:08:15,908 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [643820029] [2019-11-19 23:08:15,908 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:16,174 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 23:08:16,174 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 23:08:16,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-19 23:08:16,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:08:16,188 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 23:08:16,188 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:16,192 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:16,192 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:16,192 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 23:08:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-19 23:08:16,256 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:08:16,701 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-19 23:08:16,702 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [643820029] [2019-11-19 23:08:16,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:08:16,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2019-11-19 23:08:16,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662617821] [2019-11-19 23:08:16,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-19 23:08:16,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:08:16,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-19 23:08:16,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-19 23:08:16,703 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 12 states. [2019-11-19 23:08:17,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:08:17,466 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2019-11-19 23:08:17,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 23:08:17,467 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2019-11-19 23:08:17,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:08:17,468 INFO L225 Difference]: With dead ends: 69 [2019-11-19 23:08:17,468 INFO L226 Difference]: Without dead ends: 69 [2019-11-19 23:08:17,468 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2019-11-19 23:08:17,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-19 23:08:17,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2019-11-19 23:08:17,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-19 23:08:17,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2019-11-19 23:08:17,472 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 39 [2019-11-19 23:08:17,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:08:17,472 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2019-11-19 23:08:17,472 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-19 23:08:17,472 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2019-11-19 23:08:17,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-19 23:08:17,473 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:08:17,473 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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 23:08:17,676 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:17,676 INFO L410 AbstractCegarLoop]: === Iteration 11 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 23:08:17,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:08:17,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1757409253, now seen corresponding path program 1 times [2019-11-19 23:08:17,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:08:17,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1400410342] [2019-11-19 23:08:17,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/bin/uautomizer/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:08:18,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-19 23:08:18,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:08:18,081 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-11-19 23:08:18,081 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:18,082 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:18,082 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:18,082 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:9, output treesize:3 [2019-11-19 23:08:18,088 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 23:08:18,088 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:18,092 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:18,092 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:18,092 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 23:08:18,125 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:18,125 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 23:08:18,126 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:18,147 INFO L567 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2019-11-19 23:08:18,147 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:18,147 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:17 [2019-11-19 23:08:18,170 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2019-11-19 23:08:18,171 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:18,180 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:18,181 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:18,181 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:23 [2019-11-19 23:08:18,207 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 23:08:18,209 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 13 [2019-11-19 23:08:18,209 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:18,217 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:18,217 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:18,218 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:23 [2019-11-19 23:08:18,268 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:18,268 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 38 [2019-11-19 23:08:18,269 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:18,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:18,272 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:18,300 INFO L567 ElimStorePlain]: treesize reduction 12, result has 75.0 percent of original size [2019-11-19 23:08:18,300 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:18,301 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:18,301 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:36 [2019-11-19 23:08:18,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:18,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:18,449 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 23:08:18,455 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:18,455 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 36 treesize of output 31 [2019-11-19 23:08:18,456 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:18,474 INFO L567 ElimStorePlain]: treesize reduction 12, result has 69.2 percent of original size [2019-11-19 23:08:18,475 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:18,475 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:46, output treesize:27 [2019-11-19 23:08:18,491 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:18,492 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2019-11-19 23:08:18,493 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:18,493 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:18,494 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:18,512 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:18,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:18,514 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:18,514 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:23 [2019-11-19 23:08:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-19 23:08:18,567 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:08:18,618 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:18,620 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:18,620 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:18,620 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:14 [2019-11-19 23:08:18,824 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2019-11-19 23:08:19,105 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-11-19 23:08:19,229 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:19,233 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:19,234 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:19,234 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:39 [2019-11-19 23:08:19,311 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:19,328 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:19,328 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:19,328 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:28 [2019-11-19 23:08:19,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:19,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:19,597 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:19,598 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:19,598 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:19,598 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:1 [2019-11-19 23:08:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-19 23:08:19,607 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1400410342] [2019-11-19 23:08:19,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:08:19,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2019-11-19 23:08:19,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787964710] [2019-11-19 23:08:19,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-19 23:08:19,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:08:19,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-19 23:08:19,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2019-11-19 23:08:19,609 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 23 states. [2019-11-19 23:08:23,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:08:23,135 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2019-11-19 23:08:23,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-19 23:08:23,136 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 45 [2019-11-19 23:08:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:08:23,137 INFO L225 Difference]: With dead ends: 75 [2019-11-19 23:08:23,137 INFO L226 Difference]: Without dead ends: 75 [2019-11-19 23:08:23,138 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2019-11-19 23:08:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-11-19 23:08:23,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2019-11-19 23:08:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-11-19 23:08:23,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2019-11-19 23:08:23,142 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 45 [2019-11-19 23:08:23,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:08:23,142 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2019-11-19 23:08:23,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-19 23:08:23,142 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2019-11-19 23:08:23,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-19 23:08:23,144 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:08:23,144 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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 23:08:23,344 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:23,345 INFO L410 AbstractCegarLoop]: === Iteration 12 === [sll_circular_createErr5REQUIRES_VIOLATION, sll_circular_createErr0REQUIRES_VIOLATION, sll_circular_createErr1REQUIRES_VIOLATION, sll_circular_createErr6REQUIRES_VIOLATION, sll_circular_createErr7REQUIRES_VIOLATION, sll_circular_createErr2REQUIRES_VIOLATION, sll_circular_createErr3REQUIRES_VIOLATION, sll_circular_createErr8REQUIRES_VIOLATION, sll_circular_createErr9REQUIRES_VIOLATION, sll_circular_createErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr13ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 23:08:23,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:08:23,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1757409254, now seen corresponding path program 1 times [2019-11-19 23:08:23,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:08:23,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1744175860] [2019-11-19 23:08:23,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa978139-2a2c-49e1-affd-6dcc6e152363/bin/uautomizer/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:08:23,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 37 conjunts are in the unsatisfiable core [2019-11-19 23:08:23,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:08:23,800 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 23:08:23,800 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:23,806 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:23,806 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:23,806 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-19 23:08:23,846 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:23,846 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 23:08:23,846 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:23,871 INFO L567 ElimStorePlain]: treesize reduction 14, result has 58.8 percent of original size [2019-11-19 23:08:23,871 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:23,871 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:20 [2019-11-19 23:08:23,893 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2019-11-19 23:08:23,894 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:23,908 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:23,912 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2019-11-19 23:08:23,913 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:23,942 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:23,943 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:23,943 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:41, output treesize:28 [2019-11-19 23:08:23,977 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 23:08:23,978 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 13 [2019-11-19 23:08:23,978 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:23,995 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:23,999 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 23:08:24,000 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 11 [2019-11-19 23:08:24,000 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:24,010 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:24,010 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:24,010 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:66, output treesize:30 [2019-11-19 23:08:24,070 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:24,071 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 38 [2019-11-19 23:08:24,071 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:24,072 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:24,072 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:24,120 INFO L567 ElimStorePlain]: treesize reduction 12, result has 81.8 percent of original size [2019-11-19 23:08:24,137 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:24,137 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 34 [2019-11-19 23:08:24,137 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:24,179 INFO L567 ElimStorePlain]: treesize reduction 16, result has 75.8 percent of original size [2019-11-19 23:08:24,180 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:24,181 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:24,181 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:51, output treesize:50 [2019-11-19 23:08:24,181 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:24,229 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:24,462 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 23:08:24,472 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:24,473 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 38 treesize of output 33 [2019-11-19 23:08:24,473 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:24,540 INFO L567 ElimStorePlain]: treesize reduction 12, result has 84.6 percent of original size [2019-11-19 23:08:24,545 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 23:08:24,550 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:24,551 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 34 treesize of output 29 [2019-11-19 23:08:24,551 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:24,591 INFO L567 ElimStorePlain]: treesize reduction 12, result has 79.7 percent of original size [2019-11-19 23:08:24,591 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:24,592 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:85, output treesize:47 [2019-11-19 23:08:24,628 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:24,628 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 22 [2019-11-19 23:08:24,629 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:24,657 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:24,669 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:24,669 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 18 [2019-11-19 23:08:24,670 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:24,690 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:24,691 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:08:24,691 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:55, output treesize:17 [2019-11-19 23:08:24,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-19 23:08:24,843 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:08:25,242 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-19 23:08:25,242 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:25,243 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:25,244 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:25,256 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:25,265 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:25,274 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:25,283 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:25,294 INFO L496 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:25,301 INFO L496 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:25,447 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-19 23:08:25,447 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:25,455 INFO L496 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:25,460 INFO L496 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:25,469 INFO L496 ElimStorePlain]: Start of recursive call 10: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:25,486 INFO L496 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:25,498 INFO L496 ElimStorePlain]: Start of recursive call 12: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:25,504 INFO L496 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:25,592 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:25,594 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 10 dim-0 vars, and 6 xjuncts. [2019-11-19 23:08:25,594 INFO L221 ElimStorePlain]: Needed 13 recursive calls to eliminate 2 variables, input treesize:367, output treesize:207 [2019-11-19 23:08:26,627 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2019-11-19 23:08:26,949 WARN L191 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-11-19 23:08:27,275 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-19 23:08:27,582 WARN L191 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-19 23:08:28,227 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:28,228 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-19 23:08:28,229 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-19 23:08:28,244 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:28,251 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:28,262 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:28,284 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:28,298 INFO L496 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:28,310 INFO L496 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:28,860 WARN L191 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-11-19 23:08:28,860 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:28,868 INFO L496 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:28,895 INFO L496 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:28,918 INFO L496 ElimStorePlain]: Start of recursive call 10: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:28,938 INFO L496 ElimStorePlain]: Start of recursive call 11: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:28,959 INFO L496 ElimStorePlain]: Start of recursive call 12: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:28,974 INFO L496 ElimStorePlain]: Start of recursive call 13: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 23:08:30,036 WARN L191 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 122 [2019-11-19 23:08:30,036 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:08:30,037 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 10 dim-0 vars, and 6 xjuncts. [2019-11-19 23:08:30,037 INFO L221 ElimStorePlain]: Needed 13 recursive calls to eliminate 2 variables, input treesize:495, output treesize:575 [2019-11-19 23:08:30,835 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:08:30,835 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-19 23:08:30,835 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-19 23:08:30,856 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:30,870 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:30,883 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:30,892 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:31,215 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2019-11-19 23:08:31,216 INFO L567 ElimStorePlain]: treesize reduction 84, result has 84.0 percent of original size [2019-11-19 23:08:31,228 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:31,237 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-19 23:08:31,438 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:08:31,439 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no XNF at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:244) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-19 23:08:31,442 INFO L168 Benchmark]: Toolchain (without parser) took 24029.51 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 303.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -182.1 MB). Peak memory consumption was 121.4 MB. Max. memory is 11.5 GB. [2019-11-19 23:08:31,442 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:08:31,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -182.3 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-19 23:08:31,443 INFO L168 Benchmark]: Boogie Preprocessor took 71.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:08:31,443 INFO L168 Benchmark]: RCFGBuilder took 702.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 56.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 11.5 GB. [2019-11-19 23:08:31,443 INFO L168 Benchmark]: TraceAbstraction took 22666.48 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 144.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -56.4 MB). Peak memory consumption was 88.3 MB. Max. memory is 11.5 GB. [2019-11-19 23:08:31,445 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 585.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -182.3 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 71.58 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 702.18 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: 56.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 22666.48 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 144.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -56.4 MB). Peak memory consumption was 88.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no XNF de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no XNF: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:244) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...