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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/list-simple/dll2c_remove_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:56:15,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:56:15,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:56:15,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:56:15,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:56:15,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:56:15,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:56:15,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:56:15,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:56:15,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:56:15,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:56:15,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:56:15,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:56:15,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:56:15,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:56:15,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:56:15,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:56:15,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:56:15,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:56:15,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:56:15,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:56:15,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:56:15,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:56:15,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:56:15,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:56:15,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:56:15,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:56:15,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:56:15,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:56:15,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:56:15,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:56:15,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:56:15,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:56:15,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:56:15,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:56:15,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:56:15,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:56:15,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:56:15,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:56:15,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:56:15,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:56:15,544 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 [2019-10-13 22:56:15,558 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:56:15,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:56:15,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:56:15,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:56:15,560 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:56:15,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:56:15,560 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:56:15,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:56:15,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:56:15,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:56:15,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:56:15,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:56:15,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:56:15,561 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:56:15,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:56:15,562 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:56:15,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:56:15,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:56:15,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:56:15,563 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:56:15,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:56:15,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:56:15,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:56:15,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:56:15,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:56:15,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:56:15,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:56:15,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:56:15,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:56:15,850 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:56:15,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:56:15,867 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:56:15,868 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:56:15,869 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:56:15,869 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_remove_all_reverse.i [2019-10-13 22:56:15,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ea907975/332059c2693644fbad5440e6ccebade3/FLAGabad24db7 [2019-10-13 22:56:16,523 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:56:16,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_remove_all_reverse.i [2019-10-13 22:56:16,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ea907975/332059c2693644fbad5440e6ccebade3/FLAGabad24db7 [2019-10-13 22:56:16,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ea907975/332059c2693644fbad5440e6ccebade3 [2019-10-13 22:56:16,859 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:56:16,861 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:56:16,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:56:16,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:56:16,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:56:16,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:56:16" (1/1) ... [2019-10-13 22:56:16,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54d82201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:16, skipping insertion in model container [2019-10-13 22:56:16,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:56:16" (1/1) ... [2019-10-13 22:56:16,876 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:56:16,932 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:56:17,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:56:17,352 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:56:17,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:56:17,494 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:56:17,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:17 WrapperNode [2019-10-13 22:56:17,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:56:17,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:56:17,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:56:17,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:56:17,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:17" (1/1) ... [2019-10-13 22:56:17,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:17" (1/1) ... [2019-10-13 22:56:17,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:17" (1/1) ... [2019-10-13 22:56:17,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:17" (1/1) ... [2019-10-13 22:56:17,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:17" (1/1) ... [2019-10-13 22:56:17,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:17" (1/1) ... [2019-10-13 22:56:17,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:17" (1/1) ... [2019-10-13 22:56:17,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:56:17,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:56:17,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:56:17,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:56:17,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:17" (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 [2019-10-13 22:56:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:56:17,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:56:17,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 22:56:17,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 22:56:17,658 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-13 22:56:17,660 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-13 22:56:17,661 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-10-13 22:56:17,661 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_remove_last [2019-10-13 22:56:17,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:56:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:56:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 22:56:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 22:56:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 22:56:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 22:56:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 22:56:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 22:56:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 22:56:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 22:56:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 22:56:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 22:56:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 22:56:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 22:56:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 22:56:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 22:56:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 22:56:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 22:56:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 22:56:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 22:56:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 22:56:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 22:56:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 22:56:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 22:56:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 22:56:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 22:56:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 22:56:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 22:56:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 22:56:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 22:56:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 22:56:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 22:56:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 22:56:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 22:56:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 22:56:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 22:56:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 22:56:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 22:56:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 22:56:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 22:56:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 22:56:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 22:56:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 22:56:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 22:56:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 22:56:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 22:56:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 22:56:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 22:56:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 22:56:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 22:56:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 22:56:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 22:56:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 22:56:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 22:56:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:56:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:56:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 22:56:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:56:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 22:56:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 22:56:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 22:56:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 22:56:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 22:56:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 22:56:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 22:56:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 22:56:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 22:56:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 22:56:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 22:56:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 22:56:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 22:56:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 22:56:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 22:56:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 22:56:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 22:56:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 22:56:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 22:56:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 22:56:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 22:56:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 22:56:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 22:56:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 22:56:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 22:56:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 22:56:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 22:56:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 22:56:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 22:56:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 22:56:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 22:56:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 22:56:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 22:56:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 22:56:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 22:56:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 22:56:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 22:56:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 22:56:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 22:56:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 22:56:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 22:56:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 22:56:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 22:56:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 22:56:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 22:56:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 22:56:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 22:56:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 22:56:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 22:56:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-13 22:56:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-13 22:56:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:56:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:56:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:56:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-10-13 22:56:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_remove_last [2019-10-13 22:56:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:56:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:56:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:56:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:56:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:56:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:56:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:56:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:56:18,189 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-13 22:56:18,489 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:56:18,490 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 22:56:18,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:56:18 BoogieIcfgContainer [2019-10-13 22:56:18,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:56:18,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:56:18,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:56:18,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:56:18,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:56:16" (1/3) ... [2019-10-13 22:56:18,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129e94f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:56:18, skipping insertion in model container [2019-10-13 22:56:18,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:17" (2/3) ... [2019-10-13 22:56:18,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129e94f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:56:18, skipping insertion in model container [2019-10-13 22:56:18,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:56:18" (3/3) ... [2019-10-13 22:56:18,500 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all_reverse.i [2019-10-13 22:56:18,510 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:56:18,518 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:56:18,529 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:56:18,549 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:56:18,550 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:56:18,550 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:56:18,550 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:56:18,550 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:56:18,551 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:56:18,551 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:56:18,551 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:56:18,567 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-13 22:56:18,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-13 22:56:18,574 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:56:18,575 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:56:18,577 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:56:18,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:56:18,583 INFO L82 PathProgramCache]: Analyzing trace with hash 2032993842, now seen corresponding path program 1 times [2019-10-13 22:56:18,592 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:56:18,593 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449016970] [2019-10-13 22:56:18,593 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:18,593 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:18,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:56:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:56:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:56:18,863 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449016970] [2019-10-13 22:56:18,864 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:56:18,864 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:56:18,864 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028157264] [2019-10-13 22:56:18,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:56:18,869 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:56:18,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:56:18,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:56:18,886 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2019-10-13 22:56:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:56:18,977 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2019-10-13 22:56:18,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 22:56:18,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-10-13 22:56:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:56:18,987 INFO L225 Difference]: With dead ends: 50 [2019-10-13 22:56:18,987 INFO L226 Difference]: Without dead ends: 29 [2019-10-13 22:56:18,990 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 22:56:19,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-13 22:56:19,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-10-13 22:56:19,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-13 22:56:19,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-10-13 22:56:19,038 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2019-10-13 22:56:19,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:56:19,038 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-10-13 22:56:19,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:56:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-10-13 22:56:19,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-13 22:56:19,040 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:56:19,041 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:56:19,041 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:56:19,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:56:19,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1455234246, now seen corresponding path program 1 times [2019-10-13 22:56:19,042 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:56:19,042 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457427614] [2019-10-13 22:56:19,042 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:19,042 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:19,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:56:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:56:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 22:56:19,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457427614] [2019-10-13 22:56:19,218 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:56:19,219 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 22:56:19,219 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537478330] [2019-10-13 22:56:19,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:56:19,222 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:56:19,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:56:19,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:56:19,226 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 4 states. [2019-10-13 22:56:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:56:19,259 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-10-13 22:56:19,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 22:56:19,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-10-13 22:56:19,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:56:19,261 INFO L225 Difference]: With dead ends: 33 [2019-10-13 22:56:19,261 INFO L226 Difference]: Without dead ends: 30 [2019-10-13 22:56:19,262 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:56:19,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-13 22:56:19,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2019-10-13 22:56:19,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-13 22:56:19,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-10-13 22:56:19,274 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 26 [2019-10-13 22:56:19,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:56:19,275 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-10-13 22:56:19,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:56:19,275 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-10-13 22:56:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-13 22:56:19,278 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:56:19,278 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 22:56:19,278 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:56:19,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:56:19,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1129738405, now seen corresponding path program 1 times [2019-10-13 22:56:19,279 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:56:19,279 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326296685] [2019-10-13 22:56:19,280 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:19,280 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:19,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:56:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:56:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 22:56:19,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326296685] [2019-10-13 22:56:19,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946295215] [2019-10-13 22:56:19,525 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 [2019-10-13 22:56:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:56:19,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 22:56:19,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:56:19,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 22:56:19,766 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:56:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 22:56:19,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [908608682] [2019-10-13 22:56:19,856 INFO L162 IcfgInterpreter]: Started Sifa with 26 locations of interest [2019-10-13 22:56:19,856 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:56:19,863 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:56:19,871 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:56:19,871 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:56:20,016 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-13 22:56:20,287 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 22:56:20,605 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:56:20,606 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 22:56:20,618 INFO L168 Benchmark]: Toolchain (without parser) took 3754.59 ms. Allocated memory was 136.8 MB in the beginning and 252.7 MB in the end (delta: 115.9 MB). Free memory was 100.6 MB in the beginning and 208.1 MB in the end (delta: -107.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 7.1 GB. [2019-10-13 22:56:20,620 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-13 22:56:20,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.12 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 100.4 MB in the beginning and 166.5 MB in the end (delta: -66.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2019-10-13 22:56:20,628 INFO L168 Benchmark]: Boogie Preprocessor took 97.41 ms. Allocated memory is still 201.3 MB. Free memory was 166.5 MB in the beginning and 163.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2019-10-13 22:56:20,629 INFO L168 Benchmark]: RCFGBuilder took 895.46 ms. Allocated memory is still 201.3 MB. Free memory was 163.7 MB in the beginning and 101.4 MB in the end (delta: 62.3 MB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. [2019-10-13 22:56:20,631 INFO L168 Benchmark]: TraceAbstraction took 2120.89 ms. Allocated memory was 201.3 MB in the beginning and 252.7 MB in the end (delta: 51.4 MB). Free memory was 100.7 MB in the beginning and 208.1 MB in the end (delta: -107.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 22:56:20,643 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 633.12 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 100.4 MB in the beginning and 166.5 MB in the end (delta: -66.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.41 ms. Allocated memory is still 201.3 MB. Free memory was 166.5 MB in the beginning and 163.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 895.46 ms. Allocated memory is still 201.3 MB. Free memory was 163.7 MB in the beginning and 101.4 MB in the end (delta: 62.3 MB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2120.89 ms. Allocated memory was 201.3 MB in the beginning and 252.7 MB in the end (delta: 51.4 MB). Free memory was 100.7 MB in the beginning and 208.1 MB in the end (delta: -107.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...