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/sll2n_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:12:54,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:12:54,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:12:54,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:12:54,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:12:54,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:12:54,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:12:54,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:12:54,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:12:54,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:12:54,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:12:54,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:12:54,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:12:54,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:12:54,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:12:54,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:12:54,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:12:54,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:12:54,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:12:54,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:12:54,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:12:54,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:12:54,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:12:54,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:12:54,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:12:54,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:12:54,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:12:54,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:12:54,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:12:54,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:12:54,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:12:54,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:12:54,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:12:54,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:12:54,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:12:54,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:12:54,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:12:54,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:12:54,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:12:54,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:12:54,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:12:54,385 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 [2019-10-14 23:12:54,405 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:12:54,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:12:54,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:12:54,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:12:54,410 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:12:54,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:12:54,410 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:12:54,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:12:54,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:12:54,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:12:54,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:12:54,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:12:54,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:12:54,412 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:12:54,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:12:54,412 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:12:54,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:12:54,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:12:54,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:12:54,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:12:54,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:12:54,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:12:54,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:12:54,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:12:54,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:12:54,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:12:54,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:12:54,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:12:54,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:12:54,706 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:12:54,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:12:54,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:12:54,725 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:12:54,726 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:12:54,726 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_append_unequal.i [2019-10-14 23:12:54,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07973a07d/a173df25452c4730a96b741957ed0f9b/FLAGf532ca3ec [2019-10-14 23:12:55,360 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:12:55,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_append_unequal.i [2019-10-14 23:12:55,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07973a07d/a173df25452c4730a96b741957ed0f9b/FLAGf532ca3ec [2019-10-14 23:12:55,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07973a07d/a173df25452c4730a96b741957ed0f9b [2019-10-14 23:12:55,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:12:55,705 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:12:55,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:12:55,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:12:55,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:12:55,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:12:55" (1/1) ... [2019-10-14 23:12:55,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aedd7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:55, skipping insertion in model container [2019-10-14 23:12:55,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:12:55" (1/1) ... [2019-10-14 23:12:55,724 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:12:55,780 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:12:56,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:12:56,243 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:12:56,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:12:56,392 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:12:56,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:56 WrapperNode [2019-10-14 23:12:56,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:12:56,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:12:56,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:12:56,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:12:56,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:56" (1/1) ... [2019-10-14 23:12:56,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:56" (1/1) ... [2019-10-14 23:12:56,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:56" (1/1) ... [2019-10-14 23:12:56,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:56" (1/1) ... [2019-10-14 23:12:56,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:56" (1/1) ... [2019-10-14 23:12:56,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:56" (1/1) ... [2019-10-14 23:12:56,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:56" (1/1) ... [2019-10-14 23:12:56,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:12:56,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:12:56,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:12:56,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:12:56,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:56" (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 [2019-10-14 23:12:56,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:12:56,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:12:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-14 23:12:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-14 23:12:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-14 23:12:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-14 23:12:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-14 23:12:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-10-14 23:12:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-10-14 23:12:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:12:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:12:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-14 23:12:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-14 23:12:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-14 23:12:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-14 23:12:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-14 23:12:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-14 23:12:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-14 23:12:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-14 23:12:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-14 23:12:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-14 23:12:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-14 23:12:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-14 23:12:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-14 23:12:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-14 23:12:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-14 23:12:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-14 23:12:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-14 23:12:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-14 23:12:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-14 23:12:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-14 23:12:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-14 23:12:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-14 23:12:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-14 23:12:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-14 23:12:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-14 23:12:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-14 23:12:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-14 23:12:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-14 23:12:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-14 23:12:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-14 23:12:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-14 23:12:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-14 23:12:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-14 23:12:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-14 23:12:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-14 23:12:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-14 23:12:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-14 23:12:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-14 23:12:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-14 23:12:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-14 23:12:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-14 23:12:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-14 23:12:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-14 23:12:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-14 23:12:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-14 23:12:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-14 23:12:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-14 23:12:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-14 23:12:56,537 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-14 23:12:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-14 23:12:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-14 23:12:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-14 23:12:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:12:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:12:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-14 23:12:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:12:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-14 23:12:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-14 23:12:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-14 23:12:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-14 23:12:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-14 23:12:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-14 23:12:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-14 23:12:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-14 23:12:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-14 23:12:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:12:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-14 23:12:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-14 23:12:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-14 23:12:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-14 23:12:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-14 23:12:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-14 23:12:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-14 23:12:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-14 23:12:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-14 23:12:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-14 23:12:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-14 23:12:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-14 23:12:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-14 23:12:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-14 23:12:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-14 23:12:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-14 23:12:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-14 23:12:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-14 23:12:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-14 23:12:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-14 23:12:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-14 23:12:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-14 23:12:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-14 23:12:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-14 23:12:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-14 23:12:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-14 23:12:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-14 23:12:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-14 23:12:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-14 23:12:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-14 23:12:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-14 23:12:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-14 23:12:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-14 23:12:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-14 23:12:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-14 23:12:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-14 23:12:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-14 23:12:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-14 23:12:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-14 23:12:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-14 23:12:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-14 23:12:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:12:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:12:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:12:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-14 23:12:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-10-14 23:12:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:12:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:12:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-10-14 23:12:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:12:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:12:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:12:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:12:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:12:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:12:56,919 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-14 23:12:57,162 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:12:57,163 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-14 23:12:57,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:12:57 BoogieIcfgContainer [2019-10-14 23:12:57,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:12:57,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:12:57,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:12:57,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:12:57,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:12:55" (1/3) ... [2019-10-14 23:12:57,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f839cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:12:57, skipping insertion in model container [2019-10-14 23:12:57,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:56" (2/3) ... [2019-10-14 23:12:57,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f839cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:12:57, skipping insertion in model container [2019-10-14 23:12:57,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:12:57" (3/3) ... [2019-10-14 23:12:57,173 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_append_unequal.i [2019-10-14 23:12:57,183 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:12:57,192 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:12:57,206 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:12:57,229 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:12:57,229 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:12:57,229 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:12:57,230 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:12:57,230 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:12:57,230 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:12:57,230 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:12:57,230 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:12:57,247 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-10-14 23:12:57,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-14 23:12:57,255 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:57,256 INFO L380 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] [2019-10-14 23:12:57,258 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:57,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:57,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1433043619, now seen corresponding path program 1 times [2019-10-14 23:12:57,270 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:57,271 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018224302] [2019-10-14 23:12:57,271 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:57,271 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:57,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:57,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:12:57,603 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018224302] [2019-10-14 23:12:57,604 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:57,605 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:12:57,606 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673698494] [2019-10-14 23:12:57,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:12:57,629 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:57,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:12:57,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:12:57,649 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-10-14 23:12:57,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:57,946 INFO L93 Difference]: Finished difference Result 104 states and 136 transitions. [2019-10-14 23:12:57,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:12:57,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-10-14 23:12:57,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:57,964 INFO L225 Difference]: With dead ends: 104 [2019-10-14 23:12:57,965 INFO L226 Difference]: Without dead ends: 46 [2019-10-14 23:12:57,972 INFO L600 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 [2019-10-14 23:12:57,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-14 23:12:58,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2019-10-14 23:12:58,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-14 23:12:58,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2019-10-14 23:12:58,044 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 29 [2019-10-14 23:12:58,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:58,044 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2019-10-14 23:12:58,044 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:12:58,045 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2019-10-14 23:12:58,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-14 23:12:58,052 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:58,052 INFO L380 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] [2019-10-14 23:12:58,053 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:58,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:58,054 INFO L82 PathProgramCache]: Analyzing trace with hash -257763685, now seen corresponding path program 1 times [2019-10-14 23:12:58,054 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:58,055 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728018952] [2019-10-14 23:12:58,056 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:58,056 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:58,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:12:58,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728018952] [2019-10-14 23:12:58,286 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:58,286 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:12:58,286 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554685120] [2019-10-14 23:12:58,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:12:58,288 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:58,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:12:58,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:12:58,289 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 7 states. [2019-10-14 23:12:58,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:58,531 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2019-10-14 23:12:58,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:12:58,531 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2019-10-14 23:12:58,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:58,533 INFO L225 Difference]: With dead ends: 74 [2019-10-14 23:12:58,534 INFO L226 Difference]: Without dead ends: 45 [2019-10-14 23:12:58,535 INFO L600 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 [2019-10-14 23:12:58,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-14 23:12:58,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2019-10-14 23:12:58,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-14 23:12:58,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2019-10-14 23:12:58,545 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 29 [2019-10-14 23:12:58,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:58,545 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2019-10-14 23:12:58,545 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:12:58,545 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2019-10-14 23:12:58,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-14 23:12:58,547 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:58,547 INFO L380 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] [2019-10-14 23:12:58,548 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:58,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:58,548 INFO L82 PathProgramCache]: Analyzing trace with hash 58818396, now seen corresponding path program 1 times [2019-10-14 23:12:58,548 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:58,549 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294289295] [2019-10-14 23:12:58,549 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:58,549 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:58,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:12:58,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294289295] [2019-10-14 23:12:58,790 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124568930] [2019-10-14 23:12:58,790 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 [2019-10-14 23:12:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-14 23:12:58,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:12:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:12:59,073 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:12:59,073 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2019-10-14 23:12:59,073 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787554284] [2019-10-14 23:12:59,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:12:59,074 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:59,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:12:59,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:12:59,082 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 9 states. [2019-10-14 23:12:59,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:59,324 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2019-10-14 23:12:59,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:12:59,326 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2019-10-14 23:12:59,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:59,328 INFO L225 Difference]: With dead ends: 78 [2019-10-14 23:12:59,329 INFO L226 Difference]: Without dead ends: 49 [2019-10-14 23:12:59,330 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:12:59,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-10-14 23:12:59,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2019-10-14 23:12:59,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-14 23:12:59,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2019-10-14 23:12:59,347 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 38 [2019-10-14 23:12:59,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:59,347 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2019-10-14 23:12:59,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:12:59,347 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2019-10-14 23:12:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:12:59,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:59,353 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-14 23:12:59,565 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:12:59,566 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:59,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:59,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1476517957, now seen corresponding path program 2 times [2019-10-14 23:12:59,567 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:59,567 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837528755] [2019-10-14 23:12:59,568 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:59,568 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:59,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:13:00,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837528755] [2019-10-14 23:13:00,046 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831145235] [2019-10-14 23:13:00,046 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-10-14 23:13:00,204 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 23:13:00,204 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:13:00,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 41 conjunts are in the unsatisfiable core [2019-10-14 23:13:00,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:13:00,393 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 8 treesize of output 4 [2019-10-14 23:13:00,394 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:00,401 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:00,402 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:13:00,402 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-10-14 23:13:02,487 WARN L860 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.offset Int) (node_create_~temp~0.base Int)) (and (<= (+ |c_#StackHeapBarrier| 1) node_create_~temp~0.base) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) (+ node_create_~temp~0.offset 4) 0) node_create_~temp~0.offset (select (select |c_#memory_$Pointer$.base| node_create_~temp~0.base) node_create_~temp~0.offset)))))) is different from true