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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/list-simple/sll2c_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:03:51,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:03:51,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:03:51,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:03:51,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:03:51,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:03:51,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:03:51,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:03:51,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:03:51,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:03:51,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:03:51,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:03:51,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:03:51,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:03:51,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:03:51,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:03:51,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:03:51,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:03:51,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:03:51,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:03:51,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:03:51,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:03:51,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:03:51,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:03:51,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:03:51,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:03:51,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:03:51,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:03:51,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:03:51,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:03:51,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:03:51,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:03:51,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:03:51,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:03:51,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:03:51,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:03:51,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:03:51,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:03:51,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:03:51,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:03:51,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:03:51,368 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 [2019-10-15 01:03:51,391 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:03:51,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:03:51,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:03:51,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:03:51,394 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:03:51,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:03:51,395 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:03:51,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:03:51,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:03:51,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:03:51,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:03:51,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:03:51,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:03:51,397 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:03:51,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:03:51,398 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:03:51,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:03:51,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:03:51,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:03:51,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:03:51,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:03:51,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:03:51,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:03:51,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:03:51,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:03:51,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:03:51,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:03:51,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:03:51,400 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:03:51,694 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:03:51,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:03:51,714 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:03:51,715 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:03:51,716 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:03:51,717 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_prepend_unequal.i [2019-10-15 01:03:51,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e02bac817/f1d12a4279bb4f6e80a780ec8cf86da9/FLAGfc6aec91a [2019-10-15 01:03:52,368 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:03:52,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_prepend_unequal.i [2019-10-15 01:03:52,387 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e02bac817/f1d12a4279bb4f6e80a780ec8cf86da9/FLAGfc6aec91a [2019-10-15 01:03:52,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e02bac817/f1d12a4279bb4f6e80a780ec8cf86da9 [2019-10-15 01:03:52,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:03:52,740 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:03:52,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:03:52,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:03:52,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:03:52,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:03:52" (1/1) ... [2019-10-15 01:03:52,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3a515f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:52, skipping insertion in model container [2019-10-15 01:03:52,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:03:52" (1/1) ... [2019-10-15 01:03:52,758 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:03:52,824 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:03:53,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:03:53,325 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:03:53,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:03:53,423 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:03:53,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:53 WrapperNode [2019-10-15 01:03:53,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:03:53,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:03:53,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:03:53,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:03:53,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:53" (1/1) ... [2019-10-15 01:03:53,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:53" (1/1) ... [2019-10-15 01:03:53,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:53" (1/1) ... [2019-10-15 01:03:53,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:53" (1/1) ... [2019-10-15 01:03:53,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:53" (1/1) ... [2019-10-15 01:03:53,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:53" (1/1) ... [2019-10-15 01:03:53,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:53" (1/1) ... [2019-10-15 01:03:53,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:03:53,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:03:53,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:03:53,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:03:53,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:53" (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 [2019-10-15 01:03:53,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:03:53,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:03:53,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 01:03:53,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 01:03:53,584 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-15 01:03:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-15 01:03:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-10-15 01:03:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-10-15 01:03:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_prepend [2019-10-15 01:03:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:03:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:03:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 01:03:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 01:03:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 01:03:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 01:03:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 01:03:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 01:03:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 01:03:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 01:03:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 01:03:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 01:03:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 01:03:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 01:03:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 01:03:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 01:03:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 01:03:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 01:03:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 01:03:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 01:03:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 01:03:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 01:03:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 01:03:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 01:03:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 01:03:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 01:03:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 01:03:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 01:03:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 01:03:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 01:03:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 01:03:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 01:03:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 01:03:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 01:03:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 01:03:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 01:03:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 01:03:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 01:03:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 01:03:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 01:03:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 01:03:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 01:03:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 01:03:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 01:03:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 01:03:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 01:03:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 01:03:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 01:03:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 01:03:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 01:03:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 01:03:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 01:03:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 01:03:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 01:03:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:03:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 01:03:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 01:03:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:03:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 01:03:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 01:03:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 01:03:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 01:03:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 01:03:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 01:03:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 01:03:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 01:03:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 01:03:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:03:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 01:03:53,597 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 01:03:53,597 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 01:03:53,597 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 01:03:53,597 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 01:03:53,597 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 01:03:53,597 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 01:03:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 01:03:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 01:03:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 01:03:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 01:03:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 01:03:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 01:03:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 01:03:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 01:03:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 01:03:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 01:03:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 01:03:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 01:03:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 01:03:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 01:03:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 01:03:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 01:03:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 01:03:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 01:03:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 01:03:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 01:03:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 01:03:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 01:03:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 01:03:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 01:03:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 01:03:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 01:03:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 01:03:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 01:03:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 01:03:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 01:03:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 01:03:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 01:03:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-15 01:03:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-15 01:03:53,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:03:53,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:03:53,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:03:53,603 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-10-15 01:03:53,603 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-10-15 01:03:53,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:03:53,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:03:53,604 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_prepend [2019-10-15 01:03:53,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:03:53,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:03:53,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 01:03:53,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:03:53,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:03:53,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:03:53,976 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-15 01:03:54,232 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:03:54,232 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:03:54,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:03:54 BoogieIcfgContainer [2019-10-15 01:03:54,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:03:54,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:03:54,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:03:54,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:03:54,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:03:52" (1/3) ... [2019-10-15 01:03:54,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681193a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:03:54, skipping insertion in model container [2019-10-15 01:03:54,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:53" (2/3) ... [2019-10-15 01:03:54,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681193a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:03:54, skipping insertion in model container [2019-10-15 01:03:54,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:03:54" (3/3) ... [2019-10-15 01:03:54,242 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_prepend_unequal.i [2019-10-15 01:03:54,253 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:03:54,262 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:03:54,274 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:03:54,300 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:03:54,301 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:03:54,301 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:03:54,301 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:03:54,301 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:03:54,302 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:03:54,302 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:03:54,302 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:03:54,322 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2019-10-15 01:03:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-15 01:03:54,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:54,332 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] [2019-10-15 01:03:54,334 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:54,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:54,341 INFO L82 PathProgramCache]: Analyzing trace with hash -40176771, now seen corresponding path program 1 times [2019-10-15 01:03:54,351 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:54,352 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276688810] [2019-10-15 01:03:54,352 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:54,353 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:54,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:54,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 01:03:54,652 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276688810] [2019-10-15 01:03:54,653 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:03:54,654 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:03:54,654 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707908985] [2019-10-15 01:03:54,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:03:54,662 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:54,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:03:54,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:03:54,681 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2019-10-15 01:03:54,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:54,712 INFO L93 Difference]: Finished difference Result 99 states and 127 transitions. [2019-10-15 01:03:54,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:03:54,713 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2019-10-15 01:03:54,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:54,721 INFO L225 Difference]: With dead ends: 99 [2019-10-15 01:03:54,722 INFO L226 Difference]: Without dead ends: 41 [2019-10-15 01:03:54,726 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:03:54,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-15 01:03:54,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-10-15 01:03:54,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-15 01:03:54,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2019-10-15 01:03:54,798 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 35 [2019-10-15 01:03:54,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:54,800 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2019-10-15 01:03:54,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:03:54,801 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2019-10-15 01:03:54,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-15 01:03:54,803 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:54,803 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] [2019-10-15 01:03:54,803 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:54,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:54,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1882198717, now seen corresponding path program 1 times [2019-10-15 01:03:54,804 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:54,804 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228693819] [2019-10-15 01:03:54,804 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:54,805 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:54,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 01:03:54,982 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228693819] [2019-10-15 01:03:54,983 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:03:54,983 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:03:54,983 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916507777] [2019-10-15 01:03:54,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:03:54,985 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:54,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:03:54,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:03:54,986 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 5 states. [2019-10-15 01:03:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:55,067 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2019-10-15 01:03:55,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:03:55,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2019-10-15 01:03:55,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:55,069 INFO L225 Difference]: With dead ends: 72 [2019-10-15 01:03:55,069 INFO L226 Difference]: Without dead ends: 44 [2019-10-15 01:03:55,071 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 [2019-10-15 01:03:55,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-15 01:03:55,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2019-10-15 01:03:55,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-15 01:03:55,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2019-10-15 01:03:55,080 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 35 [2019-10-15 01:03:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:55,081 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2019-10-15 01:03:55,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:03:55,082 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2019-10-15 01:03:55,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-15 01:03:55,083 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:55,084 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:03:55,084 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:55,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:55,084 INFO L82 PathProgramCache]: Analyzing trace with hash 473130955, now seen corresponding path program 1 times [2019-10-15 01:03:55,085 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:55,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153053289] [2019-10-15 01:03:55,085 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:55,085 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:55,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:03:55,621 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153053289] [2019-10-15 01:03:55,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786433508] [2019-10-15 01:03:55,622 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 [2019-10-15 01:03:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:55,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 45 conjunts are in the unsatisfiable core [2019-10-15 01:03:55,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:03:56,035 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 [2019-10-15 01:03:56,036 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:03:56,043 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:03:56,044 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:03:56,044 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-10-15 01:03:57,424 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 20 [2019-10-15 01:03:58,244 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-10-15 01:03:58,266 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:03:58,286 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:03:58,287 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-10-15 01:03:58,287 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:26 [2019-10-15 01:04:03,237 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:04:03,237 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:04:03,435 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:04:03,441 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:04:03,442 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-10-15 01:04:03,443 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:27 [2019-10-15 01:04:03,701 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:04:03,714 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:04:03,716 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-10-15 01:04:03,717 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:49, output treesize:39 [2019-10-15 01:04:03,804 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:04:03,825 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-15 01:04:03,826 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:04:03,847 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:04:04,049 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:04:04,051 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: alternation not yet supported: (forall ((v_sll_circular_prepend_~head.base_BEFORE_CALL_2 Int) (v_sll_circular_prepend_~head.offset_BEFORE_CALL_2 Int)) (exists ((v_node_create_~temp~0.offset_13 Int) (v_DerPreprocessor_3 Int) (v_node_create_~temp~0.base_11 Int)) (or (and (not (< v_node_create_~temp~0.base_11 (+ |#StackHeapBarrier| 1))) (= (select (select (store |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11 (store (store (select |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11) v_node_create_~temp~0.offset_13 0) (+ v_node_create_~temp~0.offset_13 4) v_DerPreprocessor_3)) v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2) 0)) (not (= (select (select |#memory_$Pointer$.base| v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2) 0))))) 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.UnsupportedOperationException: alternation not yet supported: (forall ((v_sll_circular_prepend_~head.base_BEFORE_CALL_2 Int) (v_sll_circular_prepend_~head.offset_BEFORE_CALL_2 Int)) (exists ((v_node_create_~temp~0.offset_13 Int) (v_DerPreprocessor_3 Int) (v_node_create_~temp~0.base_11 Int)) (or (and (not (< v_node_create_~temp~0.base_11 (+ |#StackHeapBarrier| 1))) (= (select (select (store |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11 (store (store (select |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11) v_node_create_~temp~0.offset_13 0) (+ v_node_create_~temp~0.offset_13 4) v_DerPreprocessor_3)) v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2) 0)) (not (= (select (select |#memory_$Pointer$.base| v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2) 0))))) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:667) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:493) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:335) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-15 01:04:04,057 INFO L168 Benchmark]: Toolchain (without parser) took 11316.47 ms. Allocated memory was 138.9 MB in the beginning and 248.5 MB in the end (delta: 109.6 MB). Free memory was 100.5 MB in the beginning and 126.5 MB in the end (delta: -26.0 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:04,058 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-10-15 01:04:04,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.02 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.3 MB in the beginning and 167.4 MB in the end (delta: -67.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:04,060 INFO L168 Benchmark]: Boogie Preprocessor took 88.87 ms. Allocated memory is still 202.9 MB. Free memory was 167.4 MB in the beginning and 164.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:04,060 INFO L168 Benchmark]: RCFGBuilder took 719.53 ms. Allocated memory is still 202.9 MB. Free memory was 164.2 MB in the beginning and 112.8 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:04,061 INFO L168 Benchmark]: TraceAbstraction took 9820.25 ms. Allocated memory was 202.9 MB in the beginning and 248.5 MB in the end (delta: 45.6 MB). Free memory was 112.8 MB in the beginning and 126.5 MB in the end (delta: -13.6 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:04,066 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 683.02 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.3 MB in the beginning and 167.4 MB in the end (delta: -67.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.87 ms. Allocated memory is still 202.9 MB. Free memory was 167.4 MB in the beginning and 164.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 719.53 ms. Allocated memory is still 202.9 MB. Free memory was 164.2 MB in the beginning and 112.8 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9820.25 ms. Allocated memory was 202.9 MB in the beginning and 248.5 MB in the end (delta: 45.6 MB). Free memory was 112.8 MB in the beginning and 126.5 MB in the end (delta: -13.6 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: alternation not yet supported: (forall ((v_sll_circular_prepend_~head.base_BEFORE_CALL_2 Int) (v_sll_circular_prepend_~head.offset_BEFORE_CALL_2 Int)) (exists ((v_node_create_~temp~0.offset_13 Int) (v_DerPreprocessor_3 Int) (v_node_create_~temp~0.base_11 Int)) (or (and (not (< v_node_create_~temp~0.base_11 (+ |#StackHeapBarrier| 1))) (= (select (select (store |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11 (store (store (select |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11) v_node_create_~temp~0.offset_13 0) (+ v_node_create_~temp~0.offset_13 4) v_DerPreprocessor_3)) v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2) 0)) (not (= (select (select |#memory_$Pointer$.base| v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2) 0))))) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: alternation not yet supported: (forall ((v_sll_circular_prepend_~head.base_BEFORE_CALL_2 Int) (v_sll_circular_prepend_~head.offset_BEFORE_CALL_2 Int)) (exists ((v_node_create_~temp~0.offset_13 Int) (v_DerPreprocessor_3 Int) (v_node_create_~temp~0.base_11 Int)) (or (and (not (< v_node_create_~temp~0.base_11 (+ |#StackHeapBarrier| 1))) (= (select (select (store |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11 (store (store (select |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11) v_node_create_~temp~0.offset_13 0) (+ v_node_create_~temp~0.offset_13 4) v_DerPreprocessor_3)) v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2) 0)) (not (= (select (select |#memory_$Pointer$.base| v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2) 0))))): 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...