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/sll2c_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:26:07,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:26:07,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:26:07,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:26:07,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:26:07,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:26:07,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:26:07,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:26:07,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:26:07,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:26:07,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:26:07,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:26:07,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:26:07,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:26:07,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:26:07,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:26:07,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:26:07,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:26:07,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:26:07,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:26:07,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:26:07,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:26:07,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:26:07,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:26:07,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:26:07,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:26:07,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:26:07,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:26:07,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:26:07,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:26:07,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:26:07,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:26:07,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:26:07,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:26:07,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:26:07,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:26:07,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:26:07,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:26:07,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:26:07,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:26:07,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:26:07,475 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 [2019-10-07 13:26:07,503 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:26:07,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:26:07,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:26:07,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:26:07,505 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:26:07,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:26:07,506 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:26:07,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:26:07,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:26:07,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:26:07,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:26:07,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:26:07,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:26:07,507 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:26:07,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:26:07,507 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:26:07,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:26:07,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:26:07,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:26:07,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:26:07,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:26:07,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:26:07,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:26:07,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:26:07,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:26:07,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:26:07,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:26:07,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:26:07,510 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 [2019-10-07 13:26:07,792 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:26:07,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:26:07,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:26:07,811 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:26:07,812 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:26:07,813 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2019-10-07 13:26:07,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b17fa019c/ad5c5b88af624c9888faf04a64fd003b/FLAG56ec52aa9 [2019-10-07 13:26:08,399 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:26:08,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2019-10-07 13:26:08,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b17fa019c/ad5c5b88af624c9888faf04a64fd003b/FLAG56ec52aa9 [2019-10-07 13:26:08,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b17fa019c/ad5c5b88af624c9888faf04a64fd003b [2019-10-07 13:26:08,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:26:08,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:26:08,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:26:08,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:26:08,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:26:08,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:26:08" (1/1) ... [2019-10-07 13:26:08,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170c7fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:08, skipping insertion in model container [2019-10-07 13:26:08,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:26:08" (1/1) ... [2019-10-07 13:26:08,779 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:26:08,819 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:26:09,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:26:09,296 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:26:09,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:26:09,429 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:26:09,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:09 WrapperNode [2019-10-07 13:26:09,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:26:09,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:26:09,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:26:09,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:26:09,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:09" (1/1) ... [2019-10-07 13:26:09,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:09" (1/1) ... [2019-10-07 13:26:09,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:09" (1/1) ... [2019-10-07 13:26:09,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:09" (1/1) ... [2019-10-07 13:26:09,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:09" (1/1) ... [2019-10-07 13:26:09,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:09" (1/1) ... [2019-10-07 13:26:09,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:09" (1/1) ... [2019-10-07 13:26:09,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:26:09,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:26:09,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:26:09,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:26:09,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:09" (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 [2019-10-07 13:26:09,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:26:09,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:26:09,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-07 13:26:09,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-07 13:26:09,582 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-07 13:26:09,582 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-07 13:26:09,582 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-10-07 13:26:09,582 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-10-07 13:26:09,583 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_append [2019-10-07 13:26:09,583 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:26:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:26:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-07 13:26:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-07 13:26:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-07 13:26:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-07 13:26:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-07 13:26:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-07 13:26:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-07 13:26:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-07 13:26:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-07 13:26:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-07 13:26:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-07 13:26:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-07 13:26:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-07 13:26:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-07 13:26:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-07 13:26:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-07 13:26:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-07 13:26:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-07 13:26:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-07 13:26:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-07 13:26:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-07 13:26:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-07 13:26:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-07 13:26:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-07 13:26:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-07 13:26:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-07 13:26:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-07 13:26:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-07 13:26:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-07 13:26:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-07 13:26:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-07 13:26:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-07 13:26:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-07 13:26:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-07 13:26:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-07 13:26:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-07 13:26:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-07 13:26:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-07 13:26:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-07 13:26:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-07 13:26:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-07 13:26:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-07 13:26:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-07 13:26:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-07 13:26:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-07 13:26:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-07 13:26:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-07 13:26:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-07 13:26:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-07 13:26:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-07 13:26:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-07 13:26:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-07 13:26:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 13:26:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-07 13:26:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-07 13:26:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 13:26:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-07 13:26:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-07 13:26:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-07 13:26:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-07 13:26:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-07 13:26:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-07 13:26:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-07 13:26:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-07 13:26:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-07 13:26:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 13:26:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-07 13:26:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-07 13:26:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-07 13:26:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-07 13:26:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-07 13:26:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-07 13:26:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-07 13:26:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-07 13:26:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-07 13:26:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-07 13:26:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-07 13:26:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-07 13:26:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-07 13:26:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-07 13:26:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-07 13:26:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-07 13:26:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-07 13:26:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-07 13:26:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-07 13:26:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-07 13:26:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-07 13:26:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-07 13:26:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-07 13:26:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-07 13:26:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-07 13:26:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-07 13:26:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-07 13:26:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-07 13:26:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-07 13:26:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-07 13:26:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-07 13:26:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-07 13:26:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-07 13:26:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-07 13:26:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-07 13:26:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-07 13:26:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-07 13:26:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-07 13:26:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-07 13:26:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-07 13:26:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-07 13:26:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 13:26:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 13:26:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:26:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-10-07 13:26:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-10-07 13:26:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 13:26:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:26:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_append [2019-10-07 13:26:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:26:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 13:26:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-07 13:26:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:26:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:26:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:26:09,978 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-07 13:26:10,352 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:26:10,352 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-07 13:26:10,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:26:10 BoogieIcfgContainer [2019-10-07 13:26:10,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:26:10,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:26:10,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:26:10,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:26:10,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:26:08" (1/3) ... [2019-10-07 13:26:10,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1028ed0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:26:10, skipping insertion in model container [2019-10-07 13:26:10,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:09" (2/3) ... [2019-10-07 13:26:10,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1028ed0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:26:10, skipping insertion in model container [2019-10-07 13:26:10,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:26:10" (3/3) ... [2019-10-07 13:26:10,376 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_append_unequal.i [2019-10-07 13:26:10,387 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:26:10,394 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:26:10,406 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:26:10,437 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:26:10,437 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:26:10,437 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:26:10,438 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:26:10,438 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:26:10,438 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:26:10,438 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:26:10,438 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:26:10,459 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2019-10-07 13:26:10,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-07 13:26:10,467 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:26:10,468 INFO L385 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, 1] [2019-10-07 13:26:10,471 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:26:10,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:26:10,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1785745006, now seen corresponding path program 1 times [2019-10-07 13:26:10,487 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:26:10,487 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:26:10,488 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:26:10,488 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:26:10,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:26:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:26:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 13:26:10,774 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:26:10,776 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:26:10,776 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 13:26:10,781 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 13:26:10,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 13:26:10,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 13:26:10,797 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2019-10-07 13:26:10,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:26:10,826 INFO L93 Difference]: Finished difference Result 78 states and 101 transitions. [2019-10-07 13:26:10,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 13:26:10,828 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2019-10-07 13:26:10,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:26:10,838 INFO L225 Difference]: With dead ends: 78 [2019-10-07 13:26:10,838 INFO L226 Difference]: Without dead ends: 39 [2019-10-07 13:26:10,841 INFO L606 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 [2019-10-07 13:26:10,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-07 13:26:10,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-10-07 13:26:10,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-07 13:26:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2019-10-07 13:26:10,889 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 32 [2019-10-07 13:26:10,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:26:10,891 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2019-10-07 13:26:10,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 13:26:10,891 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2019-10-07 13:26:10,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-07 13:26:10,893 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:26:10,893 INFO L385 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, 1, 1] [2019-10-07 13:26:10,894 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:26:10,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:26:10,894 INFO L82 PathProgramCache]: Analyzing trace with hash -483186204, now seen corresponding path program 1 times [2019-10-07 13:26:10,895 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:26:10,895 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:26:10,895 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:26:10,895 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:26:10,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:26:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:26:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 13:26:11,048 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:26:11,048 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:26:11,048 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 13:26:11,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:26:11,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:26:11,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:26:11,051 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 5 states. [2019-10-07 13:26:11,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:26:11,124 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2019-10-07 13:26:11,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:26:11,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2019-10-07 13:26:11,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:26:11,126 INFO L225 Difference]: With dead ends: 69 [2019-10-07 13:26:11,127 INFO L226 Difference]: Without dead ends: 42 [2019-10-07 13:26:11,128 INFO L606 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 [2019-10-07 13:26:11,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-07 13:26:11,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2019-10-07 13:26:11,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-07 13:26:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2019-10-07 13:26:11,138 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 33 [2019-10-07 13:26:11,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:26:11,138 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2019-10-07 13:26:11,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:26:11,139 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2019-10-07 13:26:11,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-07 13:26:11,140 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:26:11,140 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:26:11,141 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:26:11,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:26:11,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1583530476, now seen corresponding path program 1 times [2019-10-07 13:26:11,141 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:26:11,142 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:26:11,142 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:26:11,142 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:26:11,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:26:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:26:11,699 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 13:26:11,699 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:26:11,699 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:26:11,700 INFO L95 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 [2019-10-07 13:26:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:26:11,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 45 conjunts are in the unsatisfiable core [2019-10-07 13:26:11,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:26:12,167 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 [2019-10-07 13:26:12,168 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 13:26:12,175 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:26:12,176 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 13:26:12,176 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-10-07 13:26:13,319 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 20 [2019-10-07 13:26:14,336 WARN L191 SmtUtils]: Spent 942.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-10-07 13:26:14,356 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-07 13:26:14,364 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:26:14,366 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. [2019-10-07 13:26:14,366 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:26 [2019-10-07 13:26:20,363 WARN L191 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 23 [2019-10-07 13:26:20,574 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 13:26:20,574 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:26:20,796 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-07 13:26:20,803 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:26:20,804 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. [2019-10-07 13:26:20,805 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:27 [2019-10-07 13:26:29,915 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-07 13:26:29,923 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-07 13:26:29,962 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:26:29,964 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2019-10-07 13:26:29,965 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:100, output treesize:80 [2019-10-07 13:26:36,850 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2019-10-07 13:26:36,855 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:26:37,076 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:26:37,078 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.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:336) 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:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-07 13:26:37,084 INFO L168 Benchmark]: Toolchain (without parser) took 28318.76 ms. Allocated memory was 138.9 MB in the beginning and 248.0 MB in the end (delta: 109.1 MB). Free memory was 100.6 MB in the beginning and 109.4 MB in the end (delta: -8.8 MB). Peak memory consumption was 100.3 MB. Max. memory is 7.1 GB. [2019-10-07 13:26:37,084 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 13:26:37,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.78 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 100.6 MB in the beginning and 168.6 MB in the end (delta: -68.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2019-10-07 13:26:37,086 INFO L168 Benchmark]: Boogie Preprocessor took 84.07 ms. Allocated memory is still 203.9 MB. Free memory was 168.6 MB in the beginning and 165.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2019-10-07 13:26:37,087 INFO L168 Benchmark]: RCFGBuilder took 841.08 ms. Allocated memory is still 203.9 MB. Free memory was 165.7 MB in the beginning and 108.2 MB in the end (delta: 57.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. [2019-10-07 13:26:37,088 INFO L168 Benchmark]: TraceAbstraction took 26724.47 ms. Allocated memory was 203.9 MB in the beginning and 248.0 MB in the end (delta: 44.0 MB). Free memory was 108.2 MB in the beginning and 109.4 MB in the end (delta: -1.2 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2019-10-07 13:26:37,092 INFO L335 ainManager$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 is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 664.78 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 100.6 MB in the beginning and 168.6 MB in the end (delta: -68.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.07 ms. Allocated memory is still 203.9 MB. Free memory was 168.6 MB in the beginning and 165.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 841.08 ms. Allocated memory is still 203.9 MB. Free memory was 165.7 MB in the beginning and 108.2 MB in the end (delta: 57.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26724.47 ms. Allocated memory was 203.9 MB in the beginning and 248.0 MB in the end (delta: 44.0 MB). Free memory was 108.2 MB in the beginning and 109.4 MB in the end (delta: -1.2 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Alternating quantifiers not yet supported: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...