./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.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_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/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 1a84b349ed554162d37455efc2adb7bf93e2048b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 02:43:02,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 02:43:02,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 02:43:02,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 02:43:02,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 02:43:02,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 02:43:02,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 02:43:02,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 02:43:02,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 02:43:02,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 02:43:02,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 02:43:02,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 02:43:02,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 02:43:02,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 02:43:02,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 02:43:02,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 02:43:02,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 02:43:02,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 02:43:02,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 02:43:02,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 02:43:02,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 02:43:02,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 02:43:02,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 02:43:02,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 02:43:02,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 02:43:02,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 02:43:02,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 02:43:02,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 02:43:02,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 02:43:02,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 02:43:02,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 02:43:02,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 02:43:02,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 02:43:02,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 02:43:02,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 02:43:02,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 02:43:02,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 02:43:02,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 02:43:02,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 02:43:02,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 02:43:02,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 02:43:02,409 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 02:43:02,438 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 02:43:02,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 02:43:02,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 02:43:02,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 02:43:02,452 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 02:43:02,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 02:43:02,453 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 02:43:02,453 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 02:43:02,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 02:43:02,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 02:43:02,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 02:43:02,454 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 02:43:02,455 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 02:43:02,455 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 02:43:02,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 02:43:02,456 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 02:43:02,456 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 02:43:02,456 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 02:43:02,456 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 02:43:02,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 02:43:02,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 02:43:02,457 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 02:43:02,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 02:43:02,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:43:02,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 02:43:02,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 02:43:02,459 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 02:43:02,460 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 02:43:02,460 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 02:43:02,461 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_fe55c29e-b955-4291-b0aa-e94f684a2f24/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 -> 1a84b349ed554162d37455efc2adb7bf93e2048b [2019-11-20 02:43:02,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 02:43:02,690 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 02:43:02,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 02:43:02,695 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 02:43:02,695 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 02:43:02,696 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i [2019-11-20 02:43:02,773 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/data/7eb8b1b5f/a2669b49f15e44bdbf4ae21f62099b09/FLAGc00a35eca [2019-11-20 02:43:03,392 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 02:43:03,393 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i [2019-11-20 02:43:03,414 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/data/7eb8b1b5f/a2669b49f15e44bdbf4ae21f62099b09/FLAGc00a35eca [2019-11-20 02:43:03,687 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/data/7eb8b1b5f/a2669b49f15e44bdbf4ae21f62099b09 [2019-11-20 02:43:03,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 02:43:03,692 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 02:43:03,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 02:43:03,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 02:43:03,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 02:43:03,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:43:03" (1/1) ... [2019-11-20 02:43:03,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd3a192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:43:03, skipping insertion in model container [2019-11-20 02:43:03,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:43:03" (1/1) ... [2019-11-20 02:43:03,721 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 02:43:03,768 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 02:43:04,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:43:04,265 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 02:43:04,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:43:04,398 INFO L192 MainTranslator]: Completed translation [2019-11-20 02:43:04,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:43:04 WrapperNode [2019-11-20 02:43:04,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 02:43:04,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 02:43:04,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 02:43:04,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 02:43:04,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:43:04" (1/1) ... [2019-11-20 02:43:04,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:43:04" (1/1) ... [2019-11-20 02:43:04,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:43:04" (1/1) ... [2019-11-20 02:43:04,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:43:04" (1/1) ... [2019-11-20 02:43:04,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:43:04" (1/1) ... [2019-11-20 02:43:04,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:43:04" (1/1) ... [2019-11-20 02:43:04,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:43:04" (1/1) ... [2019-11-20 02:43:04,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 02:43:04,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 02:43:04,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 02:43:04,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 02:43:04,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:43:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:43:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 02:43:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 02:43:04,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 02:43:04,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 02:43:04,601 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-20 02:43:04,602 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-20 02:43:04,602 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-11-20 02:43:04,602 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_remove_last [2019-11-20 02:43:04,602 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 02:43:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 02:43:04,604 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 02:43:04,604 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 02:43:04,604 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 02:43:04,604 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 02:43:04,604 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 02:43:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 02:43:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 02:43:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 02:43:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 02:43:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 02:43:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 02:43:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 02:43:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 02:43:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 02:43:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 02:43:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 02:43:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 02:43:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 02:43:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 02:43:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 02:43:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 02:43:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 02:43:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 02:43:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 02:43:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 02:43:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 02:43:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 02:43:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 02:43:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 02:43:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 02:43:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 02:43:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 02:43:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 02:43:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 02:43:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 02:43:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 02:43:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 02:43:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 02:43:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 02:43:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 02:43:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 02:43:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 02:43:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 02:43:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 02:43:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 02:43:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 02:43:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 02:43:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 02:43:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 02:43:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 02:43:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 02:43:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 02:43:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 02:43:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 02:43:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 02:43:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 02:43:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-20 02:43:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 02:43:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 02:43:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 02:43:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 02:43:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 02:43:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 02:43:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 02:43:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 02:43:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 02:43:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 02:43:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 02:43:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 02:43:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 02:43:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 02:43:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 02:43:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 02:43:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 02:43:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 02:43:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 02:43:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 02:43:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 02:43:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 02:43:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 02:43:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 02:43:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 02:43:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 02:43:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 02:43:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 02:43:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 02:43:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 02:43:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 02:43:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 02:43:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 02:43:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 02:43:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 02:43:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 02:43:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 02:43:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 02:43:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 02:43:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 02:43:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 02:43:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 02:43:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 02:43:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 02:43:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 02:43:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 02:43:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 02:43:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 02:43:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-20 02:43:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-20 02:43:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 02:43:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 02:43:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 02:43:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-11-20 02:43:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_remove_last [2019-11-20 02:43:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 02:43:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 02:43:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 02:43:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 02:43:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 02:43:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 02:43:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 02:43:04,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 02:43:05,323 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-20 02:43:05,722 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 02:43:05,722 INFO L285 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-20 02:43:05,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:43:05 BoogieIcfgContainer [2019-11-20 02:43:05,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 02:43:05,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 02:43:05,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 02:43:05,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 02:43:05,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:43:03" (1/3) ... [2019-11-20 02:43:05,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3443bfae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:43:05, skipping insertion in model container [2019-11-20 02:43:05,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:43:04" (2/3) ... [2019-11-20 02:43:05,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3443bfae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:43:05, skipping insertion in model container [2019-11-20 02:43:05,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:43:05" (3/3) ... [2019-11-20 02:43:05,743 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all_reverse.i [2019-11-20 02:43:05,756 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 02:43:05,765 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 43 error locations. [2019-11-20 02:43:05,777 INFO L249 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2019-11-20 02:43:05,799 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 02:43:05,799 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 02:43:05,800 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 02:43:05,800 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 02:43:05,800 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 02:43:05,800 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 02:43:05,800 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 02:43:05,800 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 02:43:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2019-11-20 02:43:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 02:43:05,843 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:43:05,844 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:43:05,845 INFO L410 AbstractCegarLoop]: === Iteration 1 === [dll_circular_remove_lastErr4REQUIRES_VIOLATION, dll_circular_remove_lastErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr3REQUIRES_VIOLATION, dll_circular_remove_lastErr2REQUIRES_VIOLATION, dll_circular_remove_lastErr7REQUIRES_VIOLATION, dll_circular_remove_lastErr24REQUIRES_VIOLATION, dll_circular_remove_lastErr6REQUIRES_VIOLATION, dll_circular_remove_lastErr25REQUIRES_VIOLATION, dll_circular_remove_lastErr5REQUIRES_VIOLATION, dll_circular_remove_lastErr16ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr12REQUIRES_VIOLATION, dll_circular_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr11REQUIRES_VIOLATION, dll_circular_remove_lastErr17ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr14REQUIRES_VIOLATION, dll_circular_remove_lastErr10ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr13REQUIRES_VIOLATION, dll_circular_remove_lastErr15ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr21REQUIRES_VIOLATION, dll_circular_remove_lastErr22REQUIRES_VIOLATION, dll_circular_remove_lastErr23REQUIRES_VIOLATION, dll_circular_remove_lastErr18REQUIRES_VIOLATION, dll_circular_remove_lastErr1REQUIRES_VIOLATION, dll_circular_remove_lastErr19REQUIRES_VIOLATION, dll_circular_remove_lastErr0REQUIRES_VIOLATION, dll_circular_remove_lastErr20REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 02:43:05,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:43:05,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1218522858, now seen corresponding path program 1 times [2019-11-20 02:43:05,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:43:05,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [661742108] [2019-11-20 02:43:05,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:43:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:43:06,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 02:43:06,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:43:06,222 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:43:06,223 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:43:06,232 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:43:06,232 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:43:06,232 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 02:43:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:43:06,243 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:43:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:43:06,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [661742108] [2019-11-20 02:43:06,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:43:06,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 02:43:06,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794077416] [2019-11-20 02:43:06,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 02:43:06,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:43:06,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 02:43:06,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 02:43:06,283 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 3 states. [2019-11-20 02:43:06,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:43:06,544 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2019-11-20 02:43:06,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 02:43:06,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-20 02:43:06,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:43:06,555 INFO L225 Difference]: With dead ends: 108 [2019-11-20 02:43:06,555 INFO L226 Difference]: Without dead ends: 101 [2019-11-20 02:43:06,557 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 02:43:06,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-20 02:43:06,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2019-11-20 02:43:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-20 02:43:06,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2019-11-20 02:43:06,605 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 12 [2019-11-20 02:43:06,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:43:06,606 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2019-11-20 02:43:06,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 02:43:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2019-11-20 02:43:06,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 02:43:06,607 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:43:06,607 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:43:06,811 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:43:06,811 INFO L410 AbstractCegarLoop]: === Iteration 2 === [dll_circular_remove_lastErr4REQUIRES_VIOLATION, dll_circular_remove_lastErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr3REQUIRES_VIOLATION, dll_circular_remove_lastErr2REQUIRES_VIOLATION, dll_circular_remove_lastErr7REQUIRES_VIOLATION, dll_circular_remove_lastErr24REQUIRES_VIOLATION, dll_circular_remove_lastErr6REQUIRES_VIOLATION, dll_circular_remove_lastErr25REQUIRES_VIOLATION, dll_circular_remove_lastErr5REQUIRES_VIOLATION, dll_circular_remove_lastErr16ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr12REQUIRES_VIOLATION, dll_circular_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr11REQUIRES_VIOLATION, dll_circular_remove_lastErr17ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr14REQUIRES_VIOLATION, dll_circular_remove_lastErr10ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr13REQUIRES_VIOLATION, dll_circular_remove_lastErr15ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr21REQUIRES_VIOLATION, dll_circular_remove_lastErr22REQUIRES_VIOLATION, dll_circular_remove_lastErr23REQUIRES_VIOLATION, dll_circular_remove_lastErr18REQUIRES_VIOLATION, dll_circular_remove_lastErr1REQUIRES_VIOLATION, dll_circular_remove_lastErr19REQUIRES_VIOLATION, dll_circular_remove_lastErr0REQUIRES_VIOLATION, dll_circular_remove_lastErr20REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 02:43:06,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:43:06,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1218522857, now seen corresponding path program 1 times [2019-11-20 02:43:06,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:43:06,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1569108548] [2019-11-20 02:43:06,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:43:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:43:07,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 02:43:07,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:43:07,057 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:43:07,058 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:43:07,100 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:43:07,101 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:43:07,101 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 02:43:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:43:07,118 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:43:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:43:07,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1569108548] [2019-11-20 02:43:07,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:43:07,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 02:43:07,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134815975] [2019-11-20 02:43:07,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 02:43:07,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:43:07,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 02:43:07,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:43:07,169 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 4 states. [2019-11-20 02:43:07,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:43:07,619 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2019-11-20 02:43:07,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 02:43:07,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-20 02:43:07,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:43:07,622 INFO L225 Difference]: With dead ends: 98 [2019-11-20 02:43:07,623 INFO L226 Difference]: Without dead ends: 98 [2019-11-20 02:43:07,623 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:43:07,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-20 02:43:07,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2019-11-20 02:43:07,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-11-20 02:43:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2019-11-20 02:43:07,642 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 12 [2019-11-20 02:43:07,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:43:07,643 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2019-11-20 02:43:07,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 02:43:07,643 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2019-11-20 02:43:07,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 02:43:07,645 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:43:07,645 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] [2019-11-20 02:43:07,847 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:43:07,848 INFO L410 AbstractCegarLoop]: === Iteration 3 === [dll_circular_remove_lastErr4REQUIRES_VIOLATION, dll_circular_remove_lastErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr3REQUIRES_VIOLATION, dll_circular_remove_lastErr2REQUIRES_VIOLATION, dll_circular_remove_lastErr7REQUIRES_VIOLATION, dll_circular_remove_lastErr24REQUIRES_VIOLATION, dll_circular_remove_lastErr6REQUIRES_VIOLATION, dll_circular_remove_lastErr25REQUIRES_VIOLATION, dll_circular_remove_lastErr5REQUIRES_VIOLATION, dll_circular_remove_lastErr16ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr12REQUIRES_VIOLATION, dll_circular_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr11REQUIRES_VIOLATION, dll_circular_remove_lastErr17ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr14REQUIRES_VIOLATION, dll_circular_remove_lastErr10ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr13REQUIRES_VIOLATION, dll_circular_remove_lastErr15ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr21REQUIRES_VIOLATION, dll_circular_remove_lastErr22REQUIRES_VIOLATION, dll_circular_remove_lastErr23REQUIRES_VIOLATION, dll_circular_remove_lastErr18REQUIRES_VIOLATION, dll_circular_remove_lastErr1REQUIRES_VIOLATION, dll_circular_remove_lastErr19REQUIRES_VIOLATION, dll_circular_remove_lastErr0REQUIRES_VIOLATION, dll_circular_remove_lastErr20REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 02:43:07,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:43:07,849 INFO L82 PathProgramCache]: Analyzing trace with hash -646533640, now seen corresponding path program 1 times [2019-11-20 02:43:07,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:43:07,850 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [809680196] [2019-11-20 02:43:07,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:43:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:43:08,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 02:43:08,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:43:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:43:08,140 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:43:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:43:08,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [809680196] [2019-11-20 02:43:08,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:43:08,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-20 02:43:08,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588861994] [2019-11-20 02:43:08,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 02:43:08,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:43:08,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 02:43:08,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-20 02:43:08,184 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 8 states. [2019-11-20 02:43:08,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:43:08,299 INFO L93 Difference]: Finished difference Result 109 states and 115 transitions. [2019-11-20 02:43:08,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 02:43:08,300 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-11-20 02:43:08,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:43:08,301 INFO L225 Difference]: With dead ends: 109 [2019-11-20 02:43:08,302 INFO L226 Difference]: Without dead ends: 109 [2019-11-20 02:43:08,302 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-20 02:43:08,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-11-20 02:43:08,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2019-11-20 02:43:08,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-20 02:43:08,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2019-11-20 02:43:08,324 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 20 [2019-11-20 02:43:08,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:43:08,324 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2019-11-20 02:43:08,325 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 02:43:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2019-11-20 02:43:08,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 02:43:08,326 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:43:08,326 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:43:08,527 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:43:08,527 INFO L410 AbstractCegarLoop]: === Iteration 4 === [dll_circular_remove_lastErr4REQUIRES_VIOLATION, dll_circular_remove_lastErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr3REQUIRES_VIOLATION, dll_circular_remove_lastErr2REQUIRES_VIOLATION, dll_circular_remove_lastErr7REQUIRES_VIOLATION, dll_circular_remove_lastErr24REQUIRES_VIOLATION, dll_circular_remove_lastErr6REQUIRES_VIOLATION, dll_circular_remove_lastErr25REQUIRES_VIOLATION, dll_circular_remove_lastErr5REQUIRES_VIOLATION, dll_circular_remove_lastErr16ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr12REQUIRES_VIOLATION, dll_circular_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr11REQUIRES_VIOLATION, dll_circular_remove_lastErr17ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr14REQUIRES_VIOLATION, dll_circular_remove_lastErr10ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr13REQUIRES_VIOLATION, dll_circular_remove_lastErr15ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr21REQUIRES_VIOLATION, dll_circular_remove_lastErr22REQUIRES_VIOLATION, dll_circular_remove_lastErr23REQUIRES_VIOLATION, dll_circular_remove_lastErr18REQUIRES_VIOLATION, dll_circular_remove_lastErr1REQUIRES_VIOLATION, dll_circular_remove_lastErr19REQUIRES_VIOLATION, dll_circular_remove_lastErr0REQUIRES_VIOLATION, dll_circular_remove_lastErr20REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 02:43:08,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:43:08,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1481740797, now seen corresponding path program 1 times [2019-11-20 02:43:08,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:43:08,529 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [900724745] [2019-11-20 02:43:08,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:43:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:43:08,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 02:43:08,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:43:08,868 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:43:08,868 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:43:08,884 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:43:08,884 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:43:08,884 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 02:43:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 02:43:08,966 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:43:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 02:43:09,383 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [900724745] [2019-11-20 02:43:09,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:43:09,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-20 02:43:09,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341807778] [2019-11-20 02:43:09,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 02:43:09,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:43:09,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 02:43:09,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-20 02:43:09,385 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 10 states. [2019-11-20 02:43:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:43:10,646 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2019-11-20 02:43:10,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 02:43:10,647 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2019-11-20 02:43:10,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:43:10,650 INFO L225 Difference]: With dead ends: 99 [2019-11-20 02:43:10,650 INFO L226 Difference]: Without dead ends: 99 [2019-11-20 02:43:10,650 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-20 02:43:10,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-11-20 02:43:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2019-11-20 02:43:10,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-11-20 02:43:10,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2019-11-20 02:43:10,659 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 30 [2019-11-20 02:43:10,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:43:10,659 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2019-11-20 02:43:10,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 02:43:10,660 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2019-11-20 02:43:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 02:43:10,661 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:43:10,661 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:43:10,864 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:43:10,865 INFO L410 AbstractCegarLoop]: === Iteration 5 === [dll_circular_remove_lastErr4REQUIRES_VIOLATION, dll_circular_remove_lastErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr3REQUIRES_VIOLATION, dll_circular_remove_lastErr2REQUIRES_VIOLATION, dll_circular_remove_lastErr7REQUIRES_VIOLATION, dll_circular_remove_lastErr24REQUIRES_VIOLATION, dll_circular_remove_lastErr6REQUIRES_VIOLATION, dll_circular_remove_lastErr25REQUIRES_VIOLATION, dll_circular_remove_lastErr5REQUIRES_VIOLATION, dll_circular_remove_lastErr16ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr12REQUIRES_VIOLATION, dll_circular_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr11REQUIRES_VIOLATION, dll_circular_remove_lastErr17ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr14REQUIRES_VIOLATION, dll_circular_remove_lastErr10ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr13REQUIRES_VIOLATION, dll_circular_remove_lastErr15ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr21REQUIRES_VIOLATION, dll_circular_remove_lastErr22REQUIRES_VIOLATION, dll_circular_remove_lastErr23REQUIRES_VIOLATION, dll_circular_remove_lastErr18REQUIRES_VIOLATION, dll_circular_remove_lastErr1REQUIRES_VIOLATION, dll_circular_remove_lastErr19REQUIRES_VIOLATION, dll_circular_remove_lastErr0REQUIRES_VIOLATION, dll_circular_remove_lastErr20REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 02:43:10,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:43:10,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1481740796, now seen corresponding path program 1 times [2019-11-20 02:43:10,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:43:10,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1500696591] [2019-11-20 02:43:10,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:43:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:43:11,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 02:43:11,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:43:11,156 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:43:11,157 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:43:11,159 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:43:11,159 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:43:11,160 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 02:43:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 02:43:11,192 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:43:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 02:43:11,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1500696591] [2019-11-20 02:43:11,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:43:11,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 02:43:11,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813733111] [2019-11-20 02:43:11,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 02:43:11,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:43:11,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 02:43:11,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 02:43:11,257 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 6 states. [2019-11-20 02:43:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:43:11,654 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2019-11-20 02:43:11,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 02:43:11,655 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-11-20 02:43:11,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:43:11,656 INFO L225 Difference]: With dead ends: 98 [2019-11-20 02:43:11,656 INFO L226 Difference]: Without dead ends: 98 [2019-11-20 02:43:11,656 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 02:43:11,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-20 02:43:11,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2019-11-20 02:43:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-11-20 02:43:11,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2019-11-20 02:43:11,664 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 30 [2019-11-20 02:43:11,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:43:11,664 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2019-11-20 02:43:11,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 02:43:11,664 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2019-11-20 02:43:11,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 02:43:11,665 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:43:11,666 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:43:11,868 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:43:11,869 INFO L410 AbstractCegarLoop]: === Iteration 6 === [dll_circular_remove_lastErr4REQUIRES_VIOLATION, dll_circular_remove_lastErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr3REQUIRES_VIOLATION, dll_circular_remove_lastErr2REQUIRES_VIOLATION, dll_circular_remove_lastErr7REQUIRES_VIOLATION, dll_circular_remove_lastErr24REQUIRES_VIOLATION, dll_circular_remove_lastErr6REQUIRES_VIOLATION, dll_circular_remove_lastErr25REQUIRES_VIOLATION, dll_circular_remove_lastErr5REQUIRES_VIOLATION, dll_circular_remove_lastErr16ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr12REQUIRES_VIOLATION, dll_circular_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr11REQUIRES_VIOLATION, dll_circular_remove_lastErr17ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr14REQUIRES_VIOLATION, dll_circular_remove_lastErr10ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr13REQUIRES_VIOLATION, dll_circular_remove_lastErr15ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr21REQUIRES_VIOLATION, dll_circular_remove_lastErr22REQUIRES_VIOLATION, dll_circular_remove_lastErr23REQUIRES_VIOLATION, dll_circular_remove_lastErr18REQUIRES_VIOLATION, dll_circular_remove_lastErr1REQUIRES_VIOLATION, dll_circular_remove_lastErr19REQUIRES_VIOLATION, dll_circular_remove_lastErr0REQUIRES_VIOLATION, dll_circular_remove_lastErr20REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 02:43:11,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:43:11,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1976237667, now seen corresponding path program 1 times [2019-11-20 02:43:11,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:43:11,870 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1583092103] [2019-11-20 02:43:11,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:43:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:43:12,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 02:43:12,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:43:12,134 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:43:12,134 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:43:12,137 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:43:12,137 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:43:12,138 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 02:43:12,235 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:43:12,235 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 [2019-11-20 02:43:12,236 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:43:12,256 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 02:43:12,256 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. [2019-11-20 02:43:12,257 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2019-11-20 02:43:12,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:43:12,270 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:43:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:43:12,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1583092103] [2019-11-20 02:43:12,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:43:12,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-11-20 02:43:12,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416800309] [2019-11-20 02:43:12,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 02:43:12,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:43:12,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 02:43:12,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-20 02:43:12,478 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 9 states. [2019-11-20 02:43:25,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:43:25,587 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2019-11-20 02:43:25,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 02:43:25,588 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2019-11-20 02:43:25,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:43:25,589 INFO L225 Difference]: With dead ends: 124 [2019-11-20 02:43:25,589 INFO L226 Difference]: Without dead ends: 124 [2019-11-20 02:43:25,590 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-11-20 02:43:25,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-11-20 02:43:25,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 102. [2019-11-20 02:43:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-20 02:43:25,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2019-11-20 02:43:25,610 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 32 [2019-11-20 02:43:25,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:43:25,611 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2019-11-20 02:43:25,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 02:43:25,613 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2019-11-20 02:43:25,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 02:43:25,614 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:43:25,614 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:43:25,817 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:43:25,817 INFO L410 AbstractCegarLoop]: === Iteration 7 === [dll_circular_remove_lastErr4REQUIRES_VIOLATION, dll_circular_remove_lastErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr3REQUIRES_VIOLATION, dll_circular_remove_lastErr2REQUIRES_VIOLATION, dll_circular_remove_lastErr7REQUIRES_VIOLATION, dll_circular_remove_lastErr24REQUIRES_VIOLATION, dll_circular_remove_lastErr6REQUIRES_VIOLATION, dll_circular_remove_lastErr25REQUIRES_VIOLATION, dll_circular_remove_lastErr5REQUIRES_VIOLATION, dll_circular_remove_lastErr16ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr12REQUIRES_VIOLATION, dll_circular_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr11REQUIRES_VIOLATION, dll_circular_remove_lastErr17ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr14REQUIRES_VIOLATION, dll_circular_remove_lastErr10ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr13REQUIRES_VIOLATION, dll_circular_remove_lastErr15ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr21REQUIRES_VIOLATION, dll_circular_remove_lastErr22REQUIRES_VIOLATION, dll_circular_remove_lastErr23REQUIRES_VIOLATION, dll_circular_remove_lastErr18REQUIRES_VIOLATION, dll_circular_remove_lastErr1REQUIRES_VIOLATION, dll_circular_remove_lastErr19REQUIRES_VIOLATION, dll_circular_remove_lastErr0REQUIRES_VIOLATION, dll_circular_remove_lastErr20REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 02:43:25,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:43:25,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1976237666, now seen corresponding path program 1 times [2019-11-20 02:43:25,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:43:25,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1418349407] [2019-11-20 02:43:25,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:43:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:43:26,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-20 02:43:26,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:43:26,109 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:43:26,109 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:43:26,117 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:43:26,120 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:43:26,121 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 02:43:26,128 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:43:26,128 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:43:26,128 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 02:43:26,253 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:43:26,254 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2019-11-20 02:43:26,254 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:43:26,263 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:43:26,268 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2019-11-20 02:43:26,269 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 02:43:26,280 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:43:26,281 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 02:43:26,281 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:20 [2019-11-20 02:43:26,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:43:26,329 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:43:26,468 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:43:26,720 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-11-20 02:43:26,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:43:26,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:43:26,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:43:26,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:43:26,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:43:26,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:43:26,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:43:26,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:43:30,875 WARN L191 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2019-11-20 02:43:30,906 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:43:34,391 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:43:34,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1418349407] [2019-11-20 02:43:34,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:43:34,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2019-11-20 02:43:34,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962269485] [2019-11-20 02:43:34,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 02:43:34,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:43:34,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 02:43:34,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=201, Unknown=1, NotChecked=0, Total=240 [2019-11-20 02:43:34,394 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand 16 states. [2019-11-20 02:43:40,748 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_node_create_#t~malloc2.base_31| (_ BitVec 32)) (v_dll_circular_create_~head~0.offset_BEFORE_CALL_2 (_ BitVec 32)) (v_dll_circular_create_~head~0.base_BEFORE_CALL_4 (_ BitVec 32))) (let ((.cse1 (bvadd v_dll_circular_create_~head~0.offset_BEFORE_CALL_2 (_ bv4 32))) (.cse0 (bvadd v_dll_circular_create_~head~0.offset_BEFORE_CALL_2 (_ bv8 32)))) (or (exists ((v_prenex_2 (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| v_prenex_2)) (not (bvsle (bvadd v_dll_circular_create_~head~0.offset_BEFORE_CALL_2 (_ bv8 32)) (select (store |c_old(#length)| v_prenex_2 (_ bv12 32)) v_dll_circular_create_~head~0.base_BEFORE_CALL_4))))) (bvsle .cse0 (select (store |c_#length| |v_node_create_#t~malloc2.base_31| (_ bv12 32)) v_dll_circular_create_~head~0.base_BEFORE_CALL_4)) (not (bvsle (_ bv0 32) .cse1)) (not (bvsle .cse1 .cse0)) (not (= (select |c_#valid| |v_node_create_#t~malloc2.base_31|) (_ bv0 1)))))) (= (_ bv1 1) (select |c_#valid| c_node_create_~temp~0.base)) (= (_ bv0 32) c_node_create_~temp~0.offset) (exists ((|node_create_#t~malloc2.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |node_create_#t~malloc2.base|) (_ bv0 1)) (= |c_#length| (store |c_old(#length)| |node_create_#t~malloc2.base| (_ bv12 32))))) (= (bvadd (select |c_#length| c_node_create_~temp~0.base) (_ bv4294967284 32)) (_ bv0 32))) is different from false [2019-11-20 02:44:08,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:44:08,372 INFO L93 Difference]: Finished difference Result 105 states and 111 transitions. [2019-11-20 02:44:08,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 02:44:08,377 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2019-11-20 02:44:08,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:44:08,379 INFO L225 Difference]: With dead ends: 105 [2019-11-20 02:44:08,379 INFO L226 Difference]: Without dead ends: 105 [2019-11-20 02:44:08,380 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=82, Invalid=382, Unknown=2, NotChecked=40, Total=506 [2019-11-20 02:44:08,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-20 02:44:08,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 102. [2019-11-20 02:44:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-20 02:44:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 108 transitions. [2019-11-20 02:44:08,400 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 108 transitions. Word has length 32 [2019-11-20 02:44:08,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:44:08,401 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 108 transitions. [2019-11-20 02:44:08,401 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 02:44:08,401 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 108 transitions. [2019-11-20 02:44:08,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 02:44:08,404 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:44:08,404 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:44:08,607 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:44:08,607 INFO L410 AbstractCegarLoop]: === Iteration 8 === [dll_circular_remove_lastErr4REQUIRES_VIOLATION, dll_circular_remove_lastErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr3REQUIRES_VIOLATION, dll_circular_remove_lastErr2REQUIRES_VIOLATION, dll_circular_remove_lastErr7REQUIRES_VIOLATION, dll_circular_remove_lastErr24REQUIRES_VIOLATION, dll_circular_remove_lastErr6REQUIRES_VIOLATION, dll_circular_remove_lastErr25REQUIRES_VIOLATION, dll_circular_remove_lastErr5REQUIRES_VIOLATION, dll_circular_remove_lastErr16ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr12REQUIRES_VIOLATION, dll_circular_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr11REQUIRES_VIOLATION, dll_circular_remove_lastErr17ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr14REQUIRES_VIOLATION, dll_circular_remove_lastErr10ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr13REQUIRES_VIOLATION, dll_circular_remove_lastErr15ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr21REQUIRES_VIOLATION, dll_circular_remove_lastErr22REQUIRES_VIOLATION, dll_circular_remove_lastErr23REQUIRES_VIOLATION, dll_circular_remove_lastErr18REQUIRES_VIOLATION, dll_circular_remove_lastErr1REQUIRES_VIOLATION, dll_circular_remove_lastErr19REQUIRES_VIOLATION, dll_circular_remove_lastErr0REQUIRES_VIOLATION, dll_circular_remove_lastErr20REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 02:44:08,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:44:08,608 INFO L82 PathProgramCache]: Analyzing trace with hash -788699084, now seen corresponding path program 1 times [2019-11-20 02:44:08,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:44:08,608 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [443702108] [2019-11-20 02:44:08,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/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 [2019-11-20 02:44:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:44:08,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 02:44:08,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:44:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 02:44:08,812 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:44:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 02:44:08,868 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [443702108] [2019-11-20 02:44:08,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:44:08,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-20 02:44:08,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551232378] [2019-11-20 02:44:08,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 02:44:08,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:44:08,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 02:44:08,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 02:44:08,869 INFO L87 Difference]: Start difference. First operand 102 states and 108 transitions. Second operand 6 states. [2019-11-20 02:44:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:44:09,036 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2019-11-20 02:44:09,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 02:44:09,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-11-20 02:44:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:44:09,038 INFO L225 Difference]: With dead ends: 103 [2019-11-20 02:44:09,038 INFO L226 Difference]: Without dead ends: 103 [2019-11-20 02:44:09,039 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 02:44:09,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-20 02:44:09,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2019-11-20 02:44:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-20 02:44:09,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2019-11-20 02:44:09,045 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 34 [2019-11-20 02:44:09,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:44:09,045 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2019-11-20 02:44:09,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 02:44:09,045 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2019-11-20 02:44:09,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 02:44:09,046 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:44:09,047 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:44:09,247 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:44:09,247 INFO L410 AbstractCegarLoop]: === Iteration 9 === [dll_circular_remove_lastErr4REQUIRES_VIOLATION, dll_circular_remove_lastErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr3REQUIRES_VIOLATION, dll_circular_remove_lastErr2REQUIRES_VIOLATION, dll_circular_remove_lastErr7REQUIRES_VIOLATION, dll_circular_remove_lastErr24REQUIRES_VIOLATION, dll_circular_remove_lastErr6REQUIRES_VIOLATION, dll_circular_remove_lastErr25REQUIRES_VIOLATION, dll_circular_remove_lastErr5REQUIRES_VIOLATION, dll_circular_remove_lastErr16ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr12REQUIRES_VIOLATION, dll_circular_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr11REQUIRES_VIOLATION, dll_circular_remove_lastErr17ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr14REQUIRES_VIOLATION, dll_circular_remove_lastErr10ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr13REQUIRES_VIOLATION, dll_circular_remove_lastErr15ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr21REQUIRES_VIOLATION, dll_circular_remove_lastErr22REQUIRES_VIOLATION, dll_circular_remove_lastErr23REQUIRES_VIOLATION, dll_circular_remove_lastErr18REQUIRES_VIOLATION, dll_circular_remove_lastErr1REQUIRES_VIOLATION, dll_circular_remove_lastErr19REQUIRES_VIOLATION, dll_circular_remove_lastErr0REQUIRES_VIOLATION, dll_circular_remove_lastErr20REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 02:44:09,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:44:09,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1315351477, now seen corresponding path program 1 times [2019-11-20 02:44:09,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:44:09,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1925125257] [2019-11-20 02:44:09,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/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 [2019-11-20 02:44:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:44:09,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 02:44:09,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:44:09,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 02:44:09,544 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:44:09,582 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 02:44:09,607 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 14 treesize of output 12 [2019-11-20 02:44:09,607 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 02:44:09,624 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 12 treesize of output 10 [2019-11-20 02:44:09,624 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 02:44:09,644 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:44:09,644 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2019-11-20 02:44:09,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:44:09,646 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:44:09,646 INFO L496 ElimStorePlain]: Start of recursive call 4: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 02:44:09,718 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:44:09,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:44:09,719 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2019-11-20 02:44:09,719 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:43, output treesize:43 [2019-11-20 02:44:09,720 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:44:09,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:44:10,018 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:44:10,134 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:44:10,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:44:10,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:44:10,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 02:44:10,865 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1925125257] [2019-11-20 02:44:10,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:44:10,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2019-11-20 02:44:10,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380735347] [2019-11-20 02:44:10,866 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 02:44:10,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:44:10,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 02:44:10,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-20 02:44:10,867 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand 12 states. [2019-11-20 02:44:11,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:44:11,892 INFO L93 Difference]: Finished difference Result 113 states and 120 transitions. [2019-11-20 02:44:11,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 02:44:11,894 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2019-11-20 02:44:11,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:44:11,895 INFO L225 Difference]: With dead ends: 113 [2019-11-20 02:44:11,895 INFO L226 Difference]: Without dead ends: 113 [2019-11-20 02:44:11,896 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-11-20 02:44:11,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-11-20 02:44:11,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2019-11-20 02:44:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-20 02:44:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 112 transitions. [2019-11-20 02:44:11,906 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 112 transitions. Word has length 35 [2019-11-20 02:44:11,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:44:11,909 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 112 transitions. [2019-11-20 02:44:11,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 02:44:11,909 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 112 transitions. [2019-11-20 02:44:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 02:44:11,916 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:44:11,916 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:44:12,120 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:44:12,123 INFO L410 AbstractCegarLoop]: === Iteration 10 === [dll_circular_remove_lastErr4REQUIRES_VIOLATION, dll_circular_remove_lastErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr3REQUIRES_VIOLATION, dll_circular_remove_lastErr2REQUIRES_VIOLATION, dll_circular_remove_lastErr7REQUIRES_VIOLATION, dll_circular_remove_lastErr24REQUIRES_VIOLATION, dll_circular_remove_lastErr6REQUIRES_VIOLATION, dll_circular_remove_lastErr25REQUIRES_VIOLATION, dll_circular_remove_lastErr5REQUIRES_VIOLATION, dll_circular_remove_lastErr16ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr12REQUIRES_VIOLATION, dll_circular_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr11REQUIRES_VIOLATION, dll_circular_remove_lastErr17ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr14REQUIRES_VIOLATION, dll_circular_remove_lastErr10ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr13REQUIRES_VIOLATION, dll_circular_remove_lastErr15ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr21REQUIRES_VIOLATION, dll_circular_remove_lastErr22REQUIRES_VIOLATION, dll_circular_remove_lastErr23REQUIRES_VIOLATION, dll_circular_remove_lastErr18REQUIRES_VIOLATION, dll_circular_remove_lastErr1REQUIRES_VIOLATION, dll_circular_remove_lastErr19REQUIRES_VIOLATION, dll_circular_remove_lastErr0REQUIRES_VIOLATION, dll_circular_remove_lastErr20REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 02:44:12,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:44:12,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1315351476, now seen corresponding path program 1 times [2019-11-20 02:44:12,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:44:12,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [757264389] [2019-11-20 02:44:12,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/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 [2019-11-20 02:44:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:44:12,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 02:44:12,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:44:12,373 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 [2019-11-20 02:44:12,374 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:44:12,375 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:44:12,376 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:44:12,376 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:5, output treesize:1 [2019-11-20 02:44:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-20 02:44:12,388 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:44:12,396 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:44:12,396 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 16 [2019-11-20 02:44:12,397 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 02:44:12,397 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:44:12,399 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:44:12,399 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:44:12,400 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:3 [2019-11-20 02:44:12,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-20 02:44:12,443 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [757264389] [2019-11-20 02:44:12,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:44:12,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-20 02:44:12,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164449788] [2019-11-20 02:44:12,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 02:44:12,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:44:12,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 02:44:12,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:44:12,445 INFO L87 Difference]: Start difference. First operand 105 states and 112 transitions. Second operand 4 states. [2019-11-20 02:44:12,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:44:12,662 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2019-11-20 02:44:12,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 02:44:12,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2019-11-20 02:44:12,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:44:12,663 INFO L225 Difference]: With dead ends: 106 [2019-11-20 02:44:12,664 INFO L226 Difference]: Without dead ends: 106 [2019-11-20 02:44:12,664 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:44:12,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-11-20 02:44:12,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2019-11-20 02:44:12,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-20 02:44:12,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2019-11-20 02:44:12,668 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 35 [2019-11-20 02:44:12,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:44:12,668 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2019-11-20 02:44:12,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 02:44:12,669 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2019-11-20 02:44:12,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 02:44:12,669 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:44:12,670 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:44:12,870 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:44:12,871 INFO L410 AbstractCegarLoop]: === Iteration 11 === [dll_circular_remove_lastErr4REQUIRES_VIOLATION, dll_circular_remove_lastErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr3REQUIRES_VIOLATION, dll_circular_remove_lastErr2REQUIRES_VIOLATION, dll_circular_remove_lastErr7REQUIRES_VIOLATION, dll_circular_remove_lastErr24REQUIRES_VIOLATION, dll_circular_remove_lastErr6REQUIRES_VIOLATION, dll_circular_remove_lastErr25REQUIRES_VIOLATION, dll_circular_remove_lastErr5REQUIRES_VIOLATION, dll_circular_remove_lastErr16ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr12REQUIRES_VIOLATION, dll_circular_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr11REQUIRES_VIOLATION, dll_circular_remove_lastErr17ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr14REQUIRES_VIOLATION, dll_circular_remove_lastErr10ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr13REQUIRES_VIOLATION, dll_circular_remove_lastErr15ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr21REQUIRES_VIOLATION, dll_circular_remove_lastErr22REQUIRES_VIOLATION, dll_circular_remove_lastErr23REQUIRES_VIOLATION, dll_circular_remove_lastErr18REQUIRES_VIOLATION, dll_circular_remove_lastErr1REQUIRES_VIOLATION, dll_circular_remove_lastErr19REQUIRES_VIOLATION, dll_circular_remove_lastErr0REQUIRES_VIOLATION, dll_circular_remove_lastErr20REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 02:44:12,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:44:12,871 INFO L82 PathProgramCache]: Analyzing trace with hash 2121190095, now seen corresponding path program 1 times [2019-11-20 02:44:12,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:44:12,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1104996314] [2019-11-20 02:44:12,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/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 [2019-11-20 02:44:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:44:13,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 02:44:13,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:44:13,162 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:44:13,162 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:44:13,164 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:44:13,164 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:44:13,164 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 02:44:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 02:44:13,200 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:44:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 02:44:13,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1104996314] [2019-11-20 02:44:13,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:44:13,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-11-20 02:44:13,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858009249] [2019-11-20 02:44:13,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 02:44:13,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:44:13,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 02:44:13,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 02:44:13,246 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand 7 states. [2019-11-20 02:44:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:44:13,780 INFO L93 Difference]: Finished difference Result 105 states and 111 transitions. [2019-11-20 02:44:13,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 02:44:13,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2019-11-20 02:44:13,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:44:13,781 INFO L225 Difference]: With dead ends: 105 [2019-11-20 02:44:13,781 INFO L226 Difference]: Without dead ends: 105 [2019-11-20 02:44:13,781 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-20 02:44:13,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-20 02:44:13,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2019-11-20 02:44:13,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-20 02:44:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2019-11-20 02:44:13,784 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 36 [2019-11-20 02:44:13,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:44:13,785 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2019-11-20 02:44:13,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 02:44:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2019-11-20 02:44:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 02:44:13,785 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:44:13,786 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:44:13,989 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:44:13,989 INFO L410 AbstractCegarLoop]: === Iteration 12 === [dll_circular_remove_lastErr4REQUIRES_VIOLATION, dll_circular_remove_lastErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr3REQUIRES_VIOLATION, dll_circular_remove_lastErr2REQUIRES_VIOLATION, dll_circular_remove_lastErr7REQUIRES_VIOLATION, dll_circular_remove_lastErr24REQUIRES_VIOLATION, dll_circular_remove_lastErr6REQUIRES_VIOLATION, dll_circular_remove_lastErr25REQUIRES_VIOLATION, dll_circular_remove_lastErr5REQUIRES_VIOLATION, dll_circular_remove_lastErr16ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr12REQUIRES_VIOLATION, dll_circular_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr11REQUIRES_VIOLATION, dll_circular_remove_lastErr17ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr14REQUIRES_VIOLATION, dll_circular_remove_lastErr10ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr13REQUIRES_VIOLATION, dll_circular_remove_lastErr15ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr21REQUIRES_VIOLATION, dll_circular_remove_lastErr22REQUIRES_VIOLATION, dll_circular_remove_lastErr23REQUIRES_VIOLATION, dll_circular_remove_lastErr18REQUIRES_VIOLATION, dll_circular_remove_lastErr1REQUIRES_VIOLATION, dll_circular_remove_lastErr19REQUIRES_VIOLATION, dll_circular_remove_lastErr0REQUIRES_VIOLATION, dll_circular_remove_lastErr20REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 02:44:13,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:44:13,989 INFO L82 PathProgramCache]: Analyzing trace with hash 2121190096, now seen corresponding path program 1 times [2019-11-20 02:44:13,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:44:13,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1992054269] [2019-11-20 02:44:13,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/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 [2019-11-20 02:44:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:44:14,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 02:44:14,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:44:14,223 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:44:14,223 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:44:14,227 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:44:14,228 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:44:14,228 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 02:44:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 02:44:14,292 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:44:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 02:44:14,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1992054269] [2019-11-20 02:44:14,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:44:14,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2019-11-20 02:44:14,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829427686] [2019-11-20 02:44:14,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 02:44:14,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:44:14,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 02:44:14,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-20 02:44:14,666 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand 12 states. [2019-11-20 02:44:15,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:44:15,902 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2019-11-20 02:44:15,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 02:44:15,903 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2019-11-20 02:44:15,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:44:15,904 INFO L225 Difference]: With dead ends: 104 [2019-11-20 02:44:15,904 INFO L226 Difference]: Without dead ends: 104 [2019-11-20 02:44:15,904 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-11-20 02:44:15,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-20 02:44:15,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2019-11-20 02:44:15,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-11-20 02:44:15,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2019-11-20 02:44:15,908 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 36 [2019-11-20 02:44:15,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:44:15,908 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2019-11-20 02:44:15,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 02:44:15,908 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2019-11-20 02:44:15,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-20 02:44:15,909 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:44:15,909 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:44:16,109 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:44:16,110 INFO L410 AbstractCegarLoop]: === Iteration 13 === [dll_circular_remove_lastErr4REQUIRES_VIOLATION, dll_circular_remove_lastErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr3REQUIRES_VIOLATION, dll_circular_remove_lastErr2REQUIRES_VIOLATION, dll_circular_remove_lastErr7REQUIRES_VIOLATION, dll_circular_remove_lastErr24REQUIRES_VIOLATION, dll_circular_remove_lastErr6REQUIRES_VIOLATION, dll_circular_remove_lastErr25REQUIRES_VIOLATION, dll_circular_remove_lastErr5REQUIRES_VIOLATION, dll_circular_remove_lastErr16ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr12REQUIRES_VIOLATION, dll_circular_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr11REQUIRES_VIOLATION, dll_circular_remove_lastErr17ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr14REQUIRES_VIOLATION, dll_circular_remove_lastErr10ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr13REQUIRES_VIOLATION, dll_circular_remove_lastErr15ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr21REQUIRES_VIOLATION, dll_circular_remove_lastErr22REQUIRES_VIOLATION, dll_circular_remove_lastErr23REQUIRES_VIOLATION, dll_circular_remove_lastErr18REQUIRES_VIOLATION, dll_circular_remove_lastErr1REQUIRES_VIOLATION, dll_circular_remove_lastErr19REQUIRES_VIOLATION, dll_circular_remove_lastErr0REQUIRES_VIOLATION, dll_circular_remove_lastErr20REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 02:44:16,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:44:16,110 INFO L82 PathProgramCache]: Analyzing trace with hash -273377219, now seen corresponding path program 1 times [2019-11-20 02:44:16,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:44:16,111 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1688058779] [2019-11-20 02:44:16,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:44:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:44:16,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 02:44:16,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:44:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 02:44:16,353 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:44:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 02:44:16,407 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1688058779] [2019-11-20 02:44:16,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:44:16,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 02:44:16,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746397123] [2019-11-20 02:44:16,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 02:44:16,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 02:44:16,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 02:44:16,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-20 02:44:16,408 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand 6 states. [2019-11-20 02:44:16,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:44:16,442 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2019-11-20 02:44:16,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 02:44:16,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2019-11-20 02:44:16,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:44:16,443 INFO L225 Difference]: With dead ends: 107 [2019-11-20 02:44:16,444 INFO L226 Difference]: Without dead ends: 107 [2019-11-20 02:44:16,444 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-20 02:44:16,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-11-20 02:44:16,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2019-11-20 02:44:16,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-11-20 02:44:16,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 114 transitions. [2019-11-20 02:44:16,448 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 114 transitions. Word has length 42 [2019-11-20 02:44:16,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:44:16,448 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 114 transitions. [2019-11-20 02:44:16,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 02:44:16,448 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 114 transitions. [2019-11-20 02:44:16,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-20 02:44:16,449 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:44:16,449 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:44:16,652 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:44:16,653 INFO L410 AbstractCegarLoop]: === Iteration 14 === [dll_circular_remove_lastErr4REQUIRES_VIOLATION, dll_circular_remove_lastErr9ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr3REQUIRES_VIOLATION, dll_circular_remove_lastErr2REQUIRES_VIOLATION, dll_circular_remove_lastErr7REQUIRES_VIOLATION, dll_circular_remove_lastErr24REQUIRES_VIOLATION, dll_circular_remove_lastErr6REQUIRES_VIOLATION, dll_circular_remove_lastErr25REQUIRES_VIOLATION, dll_circular_remove_lastErr5REQUIRES_VIOLATION, dll_circular_remove_lastErr16ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr12REQUIRES_VIOLATION, dll_circular_remove_lastErr8ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr11REQUIRES_VIOLATION, dll_circular_remove_lastErr17ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr14REQUIRES_VIOLATION, dll_circular_remove_lastErr10ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr13REQUIRES_VIOLATION, dll_circular_remove_lastErr15ASSERT_VIOLATIONMEMORY_FREE, dll_circular_remove_lastErr21REQUIRES_VIOLATION, dll_circular_remove_lastErr22REQUIRES_VIOLATION, dll_circular_remove_lastErr23REQUIRES_VIOLATION, dll_circular_remove_lastErr18REQUIRES_VIOLATION, dll_circular_remove_lastErr1REQUIRES_VIOLATION, dll_circular_remove_lastErr19REQUIRES_VIOLATION, dll_circular_remove_lastErr0REQUIRES_VIOLATION, dll_circular_remove_lastErr20REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, dll_circular_createErr3REQUIRES_VIOLATION, dll_circular_createErr2REQUIRES_VIOLATION, dll_circular_createErr4REQUIRES_VIOLATION, dll_circular_createErr0REQUIRES_VIOLATION, dll_circular_createErr5REQUIRES_VIOLATION, dll_circular_createErr7REQUIRES_VIOLATION, dll_circular_createErr1REQUIRES_VIOLATION, dll_circular_createErr6REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 02:44:16,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:44:16,653 INFO L82 PathProgramCache]: Analyzing trace with hash -722365814, now seen corresponding path program 1 times [2019-11-20 02:44:16,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:44:16,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [410969933] [2019-11-20 02:44:16,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe55c29e-b955-4291-b0aa-e94f684a2f24/bin/uautomizer/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:44:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:44:16,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-20 02:44:16,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:44:16,968 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:44:16,968 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:44:16,970 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:44:16,970 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:44:16,970 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 02:44:17,130 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 02:44:17,195 INFO L343 Elim1Store]: treesize reduction 3, result has 91.7 percent of original size [2019-11-20 02:44:17,195 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 17 treesize of output 43 [2019-11-20 02:44:17,195 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:44:17,232 INFO L567 ElimStorePlain]: treesize reduction 27, result has 40.0 percent of original size [2019-11-20 02:44:17,233 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 02:44:17,233 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:18 [2019-11-20 02:44:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-20 02:44:17,301 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 02:44:17,836 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 02:44:17,836 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 02:44:17,839 INFO L168 Benchmark]: Toolchain (without parser) took 74148.37 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 327.7 MB). Free memory was 946.0 MB in the beginning and 964.3 MB in the end (delta: -18.3 MB). Peak memory consumption was 309.4 MB. Max. memory is 11.5 GB. [2019-11-20 02:44:17,840 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:44:17,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 02:44:17,840 INFO L168 Benchmark]: Boogie Preprocessor took 92.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:44:17,841 INFO L168 Benchmark]: RCFGBuilder took 1231.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 72.0 MB). Peak memory consumption was 72.0 MB. Max. memory is 11.5 GB. [2019-11-20 02:44:17,841 INFO L168 Benchmark]: TraceAbstraction took 72113.71 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 165.7 MB). Free memory was 1.1 GB in the beginning and 964.3 MB in the end (delta: 96.5 MB). Peak memory consumption was 262.2 MB. Max. memory is 11.5 GB. [2019-11-20 02:44:17,843 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 703.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 92.09 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 1231.70 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: 72.0 MB). Peak memory consumption was 72.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 72113.71 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 165.7 MB). Free memory was 1.1 GB in the beginning and 964.3 MB in the end (delta: 96.5 MB). Peak memory consumption was 262.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Alternating quantifiers not yet supported: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...