/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:17:13,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:17:13,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:17:13,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:17:13,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:17:13,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:17:13,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:17:13,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:17:13,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:17:13,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:17:13,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:17:13,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:17:13,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:17:13,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:17:13,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:17:13,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:17:13,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:17:13,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:17:13,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:17:13,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:17:13,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:17:13,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:17:13,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:17:13,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:17:13,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:17:13,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:17:13,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:17:13,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:17:13,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:17:13,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:17:13,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:17:13,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:17:13,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:17:13,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:17:13,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:17:13,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:17:13,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:17:13,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:17:13,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:17:13,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:17:13,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:17:13,520 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:17:13,534 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:17:13,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:17:13,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:17:13,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:17:13,538 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:17:13,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:17:13,538 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:17:13,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:17:13,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:17:13,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:17:13,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:17:13,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:17:13,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:17:13,539 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:17:13,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:17:13,540 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:17:13,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:17:13,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:17:13,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:17:13,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:17:13,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:17:13,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:17:13,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:17:13,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:17:13,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:17:13,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:17:13,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:17:13,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:17:13,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:17:13,875 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:17:13,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:17:13,901 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:17:13,904 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:17:13,904 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:17:13,905 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i [2019-11-06 21:17:13,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da2053129/d847faa233984e1d96844b955ba694f8/FLAG185b5e032 [2019-11-06 21:17:14,425 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:17:14,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i [2019-11-06 21:17:14,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da2053129/d847faa233984e1d96844b955ba694f8/FLAG185b5e032 [2019-11-06 21:17:14,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da2053129/d847faa233984e1d96844b955ba694f8 [2019-11-06 21:17:14,753 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:17:14,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:17:14,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:17:14,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:17:14,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:17:14,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:17:14" (1/1) ... [2019-11-06 21:17:14,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e945bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:14, skipping insertion in model container [2019-11-06 21:17:14,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:17:14" (1/1) ... [2019-11-06 21:17:14,777 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:17:14,833 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:17:15,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:17:15,371 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:17:15,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:17:15,490 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:17:15,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:15 WrapperNode [2019-11-06 21:17:15,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:17:15,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:17:15,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:17:15,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:17:15,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:15" (1/1) ... [2019-11-06 21:17:15,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:15" (1/1) ... [2019-11-06 21:17:15,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:15" (1/1) ... [2019-11-06 21:17:15,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:15" (1/1) ... [2019-11-06 21:17:15,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:15" (1/1) ... [2019-11-06 21:17:15,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:15" (1/1) ... [2019-11-06 21:17:15,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:15" (1/1) ... [2019-11-06 21:17:15,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:17:15,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:17:15,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:17:15,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:17:15,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-06 21:17:15,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:17:15,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:17:15,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-06 21:17:15,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-06 21:17:15,655 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-06 21:17:15,655 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-06 21:17:15,655 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-11-06 21:17:15,655 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2019-11-06 21:17:15,655 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2019-11-06 21:17:15,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:17:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:17:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-06 21:17:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-06 21:17:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-06 21:17:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-06 21:17:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-06 21:17:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-06 21:17:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-06 21:17:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-06 21:17:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-06 21:17:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-06 21:17:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-06 21:17:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-06 21:17:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-06 21:17:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-06 21:17:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-06 21:17:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-06 21:17:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-06 21:17:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-06 21:17:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-06 21:17:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-06 21:17:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-06 21:17:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-06 21:17:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-06 21:17:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-06 21:17:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-06 21:17:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-06 21:17:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-06 21:17:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-06 21:17:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-06 21:17:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-06 21:17:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-06 21:17:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-06 21:17:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-06 21:17:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-06 21:17:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-06 21:17:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-06 21:17:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-06 21:17:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-06 21:17:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-06 21:17:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-06 21:17:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-06 21:17:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-06 21:17:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-06 21:17:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-06 21:17:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-06 21:17:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-06 21:17:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-06 21:17:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-06 21:17:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-06 21:17:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-06 21:17:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-06 21:17:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-06 21:17:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:17:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 21:17:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-06 21:17:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:17:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-06 21:17:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-06 21:17:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-06 21:17:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-06 21:17:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-06 21:17:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-06 21:17:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-06 21:17:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-06 21:17:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-06 21:17:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:17:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-06 21:17:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-06 21:17:15,667 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-06 21:17:15,667 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-06 21:17:15,667 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-06 21:17:15,667 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-06 21:17:15,667 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-06 21:17:15,667 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-06 21:17:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-06 21:17:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-06 21:17:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-06 21:17:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-06 21:17:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-06 21:17:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-06 21:17:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-06 21:17:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-06 21:17:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-06 21:17:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-06 21:17:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-06 21:17:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-06 21:17:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-06 21:17:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-06 21:17:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-06 21:17:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-06 21:17:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-06 21:17:15,671 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-06 21:17:15,671 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-06 21:17:15,671 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-06 21:17:15,671 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-06 21:17:15,671 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-06 21:17:15,671 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-06 21:17:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-06 21:17:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-06 21:17:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-06 21:17:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-06 21:17:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-06 21:17:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-06 21:17:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-06 21:17:15,673 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-06 21:17:15,673 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-06 21:17:15,673 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-06 21:17:15,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:17:15,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:17:15,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:17:15,673 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-11-06 21:17:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2019-11-06 21:17:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:17:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:17:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2019-11-06 21:17:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:17:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:17:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 21:17:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:17:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:17:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:17:16,057 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-06 21:17:16,240 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:17:16,240 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-06 21:17:16,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:17:16 BoogieIcfgContainer [2019-11-06 21:17:16,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:17:16,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:17:16,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:17:16,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:17:16,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:17:14" (1/3) ... [2019-11-06 21:17:16,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d2184e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:17:16, skipping insertion in model container [2019-11-06 21:17:16,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:15" (2/3) ... [2019-11-06 21:17:16,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d2184e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:17:16, skipping insertion in model container [2019-11-06 21:17:16,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:17:16" (3/3) ... [2019-11-06 21:17:16,255 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_unequal.i [2019-11-06 21:17:16,264 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:17:16,271 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:17:16,283 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:17:16,310 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:17:16,310 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:17:16,310 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:17:16,310 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:17:16,311 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:17:16,311 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:17:16,311 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:17:16,311 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:17:16,333 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2019-11-06 21:17:16,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-06 21:17:16,339 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:16,340 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:17:16,342 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:16,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:16,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1640491568, now seen corresponding path program 1 times [2019-11-06 21:17:16,356 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:16,357 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629946752] [2019-11-06 21:17:16,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:17:16,722 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629946752] [2019-11-06 21:17:16,723 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:17:16,723 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:17:16,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207590687] [2019-11-06 21:17:16,731 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:17:16,732 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:17:16,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:17:16,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:17:16,746 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2019-11-06 21:17:16,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:17:16,986 INFO L93 Difference]: Finished difference Result 95 states and 120 transitions. [2019-11-06 21:17:16,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:17:16,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-11-06 21:17:16,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:17:16,998 INFO L225 Difference]: With dead ends: 95 [2019-11-06 21:17:16,998 INFO L226 Difference]: Without dead ends: 41 [2019-11-06 21:17:17,002 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:17:17,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-06 21:17:17,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2019-11-06 21:17:17,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-06 21:17:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2019-11-06 21:17:17,045 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 29 [2019-11-06 21:17:17,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:17:17,045 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2019-11-06 21:17:17,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:17:17,045 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2019-11-06 21:17:17,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-06 21:17:17,047 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:17,047 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:17:17,047 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:17,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:17,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1361191619, now seen corresponding path program 1 times [2019-11-06 21:17:17,048 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:17,048 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418188646] [2019-11-06 21:17:17,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:17:17,309 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418188646] [2019-11-06 21:17:17,309 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:17:17,309 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:17:17,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331322695] [2019-11-06 21:17:17,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:17:17,311 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:17:17,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:17:17,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:17:17,312 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 7 states. [2019-11-06 21:17:17,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:17:17,517 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2019-11-06 21:17:17,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:17:17,518 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2019-11-06 21:17:17,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:17:17,519 INFO L225 Difference]: With dead ends: 66 [2019-11-06 21:17:17,519 INFO L226 Difference]: Without dead ends: 42 [2019-11-06 21:17:17,521 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:17:17,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-06 21:17:17,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2019-11-06 21:17:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-06 21:17:17,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2019-11-06 21:17:17,529 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 29 [2019-11-06 21:17:17,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:17:17,530 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-11-06 21:17:17,530 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:17:17,530 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2019-11-06 21:17:17,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-06 21:17:17,531 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:17,532 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:17:17,532 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:17,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:17,532 INFO L82 PathProgramCache]: Analyzing trace with hash -417804790, now seen corresponding path program 1 times [2019-11-06 21:17:17,532 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:17,533 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605089157] [2019-11-06 21:17:17,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:17:17,677 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605089157] [2019-11-06 21:17:17,678 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:17:17,678 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:17:17,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699456587] [2019-11-06 21:17:17,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:17:17,681 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:17:17,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:17:17,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:17:17,682 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2019-11-06 21:17:17,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:17:17,877 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2019-11-06 21:17:17,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:17:17,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2019-11-06 21:17:17,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:17:17,879 INFO L225 Difference]: With dead ends: 71 [2019-11-06 21:17:17,879 INFO L226 Difference]: Without dead ends: 42 [2019-11-06 21:17:17,883 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:17:17,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-06 21:17:17,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2019-11-06 21:17:17,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-06 21:17:17,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2019-11-06 21:17:17,895 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 34 [2019-11-06 21:17:17,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:17:17,895 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2019-11-06 21:17:17,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:17:17,896 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2019-11-06 21:17:17,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-06 21:17:17,900 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:17,900 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:17:17,900 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:17,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:17,901 INFO L82 PathProgramCache]: Analyzing trace with hash 2071724172, now seen corresponding path program 1 times [2019-11-06 21:17:17,902 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:17,903 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235094032] [2019-11-06 21:17:17,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:17:18,093 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235094032] [2019-11-06 21:17:18,094 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247146832] [2019-11-06 21:17:18,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:17:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:18,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-06 21:17:18,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:17:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:17:18,354 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:17:18,354 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2019-11-06 21:17:18,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510778104] [2019-11-06 21:17:18,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:17:18,357 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:17:18,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:17:18,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:17:18,359 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 9 states. [2019-11-06 21:17:18,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:17:18,614 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2019-11-06 21:17:18,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:17:18,614 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2019-11-06 21:17:18,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:17:18,616 INFO L225 Difference]: With dead ends: 71 [2019-11-06 21:17:18,616 INFO L226 Difference]: Without dead ends: 47 [2019-11-06 21:17:18,617 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:17:18,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-06 21:17:18,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2019-11-06 21:17:18,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-06 21:17:18,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2019-11-06 21:17:18,627 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 34 [2019-11-06 21:17:18,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:17:18,628 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2019-11-06 21:17:18,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:17:18,628 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2019-11-06 21:17:18,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-06 21:17:18,631 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:18,631 INFO L410 BasicCegarLoop]: trace histogram [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, 1] [2019-11-06 21:17:18,836 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:17:18,836 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:18,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:18,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1918409701, now seen corresponding path program 1 times [2019-11-06 21:17:18,837 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:18,838 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183021808] [2019-11-06 21:17:18,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:19,458 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2019-11-06 21:17:19,611 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2019-11-06 21:17:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 21:17:19,789 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183021808] [2019-11-06 21:17:19,789 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:17:19,789 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-11-06 21:17:19,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741192618] [2019-11-06 21:17:19,790 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-06 21:17:19,790 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:17:19,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-06 21:17:19,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2019-11-06 21:17:19,791 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 19 states. [2019-11-06 21:17:20,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:17:20,722 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2019-11-06 21:17:20,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-06 21:17:20,723 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 39 [2019-11-06 21:17:20,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:17:20,724 INFO L225 Difference]: With dead ends: 46 [2019-11-06 21:17:20,724 INFO L226 Difference]: Without dead ends: 44 [2019-11-06 21:17:20,728 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2019-11-06 21:17:20,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-06 21:17:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2019-11-06 21:17:20,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-06 21:17:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-11-06 21:17:20,738 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 39 [2019-11-06 21:17:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:17:20,738 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-11-06 21:17:20,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-06 21:17:20,739 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-11-06 21:17:20,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-06 21:17:20,741 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:20,741 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2019-11-06 21:17:20,742 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:20,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:20,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1050708404, now seen corresponding path program 1 times [2019-11-06 21:17:20,743 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:20,744 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774327193] [2019-11-06 21:17:20,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:21,405 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2019-11-06 21:17:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:21,704 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 21:17:21,705 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774327193] [2019-11-06 21:17:21,705 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:17:21,705 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2019-11-06 21:17:21,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179161484] [2019-11-06 21:17:21,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-06 21:17:21,708 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:17:21,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-06 21:17:21,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2019-11-06 21:17:21,710 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 20 states. [2019-11-06 21:17:22,583 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2019-11-06 21:17:22,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:17:22,892 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2019-11-06 21:17:22,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-06 21:17:22,892 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 41 [2019-11-06 21:17:22,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:17:22,894 INFO L225 Difference]: With dead ends: 76 [2019-11-06 21:17:22,894 INFO L226 Difference]: Without dead ends: 47 [2019-11-06 21:17:22,895 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2019-11-06 21:17:22,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-06 21:17:22,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2019-11-06 21:17:22,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-06 21:17:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2019-11-06 21:17:22,901 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 41 [2019-11-06 21:17:22,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:17:22,902 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2019-11-06 21:17:22,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-06 21:17:22,902 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2019-11-06 21:17:22,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-06 21:17:22,903 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:22,903 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2019-11-06 21:17:22,903 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:22,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:22,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1050706730, now seen corresponding path program 1 times [2019-11-06 21:17:22,904 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:22,904 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619683469] [2019-11-06 21:17:22,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:24,044 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-11-06 21:17:24,282 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2019-11-06 21:17:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:24,887 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2019-11-06 21:17:24,909 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:17:24,909 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619683469] [2019-11-06 21:17:24,909 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692316842] [2019-11-06 21:17:24,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:17:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:25,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 105 conjunts are in the unsatisfiable core [2019-11-06 21:17:25,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:17:25,154 INFO L375 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 [2019-11-06 21:17:25,154 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:25,166 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:25,166 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:17:25,166 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-06 21:17:25,190 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:25,191 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-11-06 21:17:25,192 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:25,220 INFO L567 ElimStorePlain]: treesize reduction 14, result has 63.2 percent of original size [2019-11-06 21:17:25,221 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:17:25,221 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:24 [2019-11-06 21:17:25,286 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_33|], 2=[|v_#memory_int_30|]} [2019-11-06 21:17:25,294 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:25,297 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2019-11-06 21:17:25,298 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:25,311 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:25,315 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:25,316 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-11-06 21:17:25,317 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:25,327 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:25,327 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:17:25,328 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:62, output treesize:28 [2019-11-06 21:17:25,408 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-11-06 21:17:25,409 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:25,423 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:25,424 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:25,424 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:47, output treesize:28 [2019-11-06 21:17:25,862 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-06 21:17:25,862 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:25,879 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:25,893 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 treesize of output 3 [2019-11-06 21:17:25,894 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:25,916 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:25,921 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 15 [2019-11-06 21:17:25,922 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:25,939 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:25,964 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2019-11-06 21:17:25,965 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:25,981 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:25,982 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:17:25,982 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:63, output treesize:13 [2019-11-06 21:17:26,160 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:26,186 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:26,189 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:26,209 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:26,210 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:26,211 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:108, output treesize:80 [2019-11-06 21:17:30,314 WARN L191 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 46 [2019-11-06 21:17:34,455 WARN L191 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 52 [2019-11-06 21:17:34,471 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:34,537 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:34,542 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:34,598 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:34,599 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:34,599 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:131, output treesize:143 [2019-11-06 21:17:36,769 WARN L191 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 63 [2019-11-06 21:17:36,794 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:36,904 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-11-06 21:17:36,905 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:36,906 INFO L496 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:36,907 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:811, output treesize:825 [2019-11-06 21:17:41,306 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:41,437 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-11-06 21:17:41,438 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:41,439 INFO L496 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-2 vars, End of recursive call: 10 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:41,439 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:1344, output treesize:1440 [2019-11-06 21:17:57,780 WARN L191 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-11-06 21:17:57,932 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:57,933 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2019-11-06 21:17:57,934 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:58,157 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-11-06 21:17:58,157 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:58,163 INFO L392 ElimStorePlain]: Different costs {12=[|v_#memory_int_BEFORE_CALL_4|], 33=[|v_#memory_$Pointer$.offset_BEFORE_CALL_4|, |v_old(#memory_$Pointer$.base)_AFTER_CALL_6|]} [2019-11-06 21:17:58,194 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-06 21:17:58,206 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:58,222 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:58,226 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:58,234 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:58,245 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:58,253 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:58,321 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:58,322 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 433 treesize of output 228 [2019-11-06 21:17:58,323 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:59,091 WARN L191 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2019-11-06 21:17:59,091 INFO L567 ElimStorePlain]: treesize reduction 50, result has 96.1 percent of original size [2019-11-06 21:17:59,102 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:59,110 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:59,112 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:59,113 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:59,116 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:59,355 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2019-11-06 21:17:59,356 INFO L341 Elim1Store]: treesize reduction 665, result has 34.1 percent of original size [2019-11-06 21:17:59,356 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 828 treesize of output 824 [2019-11-06 21:17:59,358 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:59,745 WARN L191 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2019-11-06 21:17:59,746 INFO L567 ElimStorePlain]: treesize reduction 247, result has 73.1 percent of original size [2019-11-06 21:17:59,749 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:59,760 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:59,762 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:59,763 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:59,765 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:17:59,960 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-11-06 21:17:59,960 INFO L341 Elim1Store]: treesize reduction 75, result has 69.1 percent of original size [2019-11-06 21:17:59,961 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 210 treesize of output 219 [2019-11-06 21:17:59,963 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 21:17:59,963 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 21:17:59,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:17:59,968 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:00,371 WARN L191 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2019-11-06 21:18:00,372 INFO L567 ElimStorePlain]: treesize reduction 296, result has 67.7 percent of original size [2019-11-06 21:18:00,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:00,377 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:00,378 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:00,380 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:00,381 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:00,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 21:18:00,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:00,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:00,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:00,393 INFO L496 ElimStorePlain]: Start of recursive call 1: 11 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:18:00,393 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 15 variables, input treesize:1497, output treesize:1233