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_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:00:14,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:00:14,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:00:14,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:00:14,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:00:14,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:00:14,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:00:14,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:00:14,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:00:14,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:00:14,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:00:14,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:00:14,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:00:14,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:00:14,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:00:14,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:00:14,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:00:14,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:00:14,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:00:14,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:00:14,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:00:14,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:00:14,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:00:14,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:00:14,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:00:14,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:00:14,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:00:14,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:00:14,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:00:14,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:00:14,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:00:14,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:00:14,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:00:14,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:00:14,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:00:14,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:00:14,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:00:14,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:00:14,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:00:14,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:00:14,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:00:14,428 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 03:00:14,449 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:00:14,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:00:14,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:00:14,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:00:14,452 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:00:14,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:00:14,452 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:00:14,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:00:14,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:00:14,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:00:14,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:00:14,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:00:14,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:00:14,455 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:00:14,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:00:14,455 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:00:14,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:00:14,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:00:14,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:00:14,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:00:14,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:00:14,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:00:14,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:00:14,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:00:14,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:00:14,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:00:14,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:00:14,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:00:14,458 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 [2019-10-15 03:00:14,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:00:14,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:00:14,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:00:14,740 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:00:14,741 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:00:14,741 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_update_all_reverse.i [2019-10-15 03:00:14,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e1cbd7a6/1d964a24974548f59ef1b104b9c8181b/FLAGd0e61e370 [2019-10-15 03:00:15,303 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:00:15,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_update_all_reverse.i [2019-10-15 03:00:15,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e1cbd7a6/1d964a24974548f59ef1b104b9c8181b/FLAGd0e61e370 [2019-10-15 03:00:15,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e1cbd7a6/1d964a24974548f59ef1b104b9c8181b [2019-10-15 03:00:15,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:00:15,652 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:00:15,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:00:15,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:00:15,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:00:15,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:00:15" (1/1) ... [2019-10-15 03:00:15,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21180631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:15, skipping insertion in model container [2019-10-15 03:00:15,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:00:15" (1/1) ... [2019-10-15 03:00:15,670 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:00:15,732 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:00:16,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:00:16,232 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:00:16,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:00:16,336 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:00:16,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:16 WrapperNode [2019-10-15 03:00:16,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:00:16,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:00:16,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:00:16,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:00:16,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:16" (1/1) ... [2019-10-15 03:00:16,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:16" (1/1) ... [2019-10-15 03:00:16,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:16" (1/1) ... [2019-10-15 03:00:16,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:16" (1/1) ... [2019-10-15 03:00:16,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:16" (1/1) ... [2019-10-15 03:00:16,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:16" (1/1) ... [2019-10-15 03:00:16,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:16" (1/1) ... [2019-10-15 03:00:16,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:00:16,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:00:16,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:00:16,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:00:16,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:16" (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 03:00:16,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:00:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:00:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 03:00:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 03:00:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-15 03:00:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-15 03:00:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-10-15 03:00:16,470 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-10-15 03:00:16,470 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_get_data_at [2019-10-15 03:00:16,470 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_update_at [2019-10-15 03:00:16,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:00:16,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:00:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 03:00:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 03:00:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 03:00:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 03:00:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 03:00:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 03:00:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 03:00:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 03:00:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 03:00:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 03:00:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 03:00:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 03:00:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 03:00:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 03:00:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 03:00:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 03:00:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 03:00:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 03:00:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 03:00:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 03:00:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 03:00:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 03:00:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 03:00:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 03:00:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 03:00:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 03:00:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 03:00:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 03:00:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 03:00:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 03:00:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 03:00:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 03:00:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 03:00:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 03:00:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 03:00:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 03:00:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 03:00:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 03:00:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 03:00:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 03:00:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 03:00:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 03:00:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 03:00:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 03:00:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 03:00:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 03:00:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 03:00:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 03:00:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 03:00:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 03:00:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 03:00:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 03:00:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:00:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 03:00:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 03:00:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:00:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 03:00:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 03:00:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 03:00:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 03:00:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 03:00:16,481 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 03:00:16,481 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 03:00:16,481 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 03:00:16,481 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 03:00:16,481 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:00:16,481 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 03:00:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 03:00:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 03:00:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 03:00:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 03:00:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 03:00:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 03:00:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 03:00:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 03:00:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 03:00:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 03:00:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 03:00:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 03:00:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 03:00:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 03:00:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 03:00:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 03:00:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 03:00:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 03:00:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 03:00:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 03:00:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 03:00:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 03:00:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 03:00:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 03:00:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 03:00:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 03:00:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 03:00:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 03:00:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 03:00:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 03:00:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 03:00:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 03:00:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 03:00:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 03:00:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 03:00:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 03:00:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 03:00:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 03:00:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-15 03:00:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-15 03:00:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:00:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:00:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:00:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-10-15 03:00:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-10-15 03:00:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:00:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:00:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_get_data_at [2019-10-15 03:00:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:00:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_update_at [2019-10-15 03:00:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:00:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:00:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:00:16,877 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-15 03:00:17,228 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:00:17,228 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-15 03:00:17,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:00:17 BoogieIcfgContainer [2019-10-15 03:00:17,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:00:17,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:00:17,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:00:17,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:00:17,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:00:15" (1/3) ... [2019-10-15 03:00:17,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f09b181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:00:17, skipping insertion in model container [2019-10-15 03:00:17,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:16" (2/3) ... [2019-10-15 03:00:17,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f09b181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:00:17, skipping insertion in model container [2019-10-15 03:00:17,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:00:17" (3/3) ... [2019-10-15 03:00:17,238 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_update_all_reverse.i [2019-10-15 03:00:17,249 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:00:17,257 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:00:17,269 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:00:17,296 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:00:17,296 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:00:17,296 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:00:17,297 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:00:17,297 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:00:17,297 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:00:17,297 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:00:17,297 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:00:17,317 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2019-10-15 03:00:17,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-15 03:00:17,325 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:17,326 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:17,328 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:17,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:17,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1316105522, now seen corresponding path program 1 times [2019-10-15 03:00:17,343 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:17,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626970882] [2019-10-15 03:00:17,344 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:17,344 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:17,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:17,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:00:17,627 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626970882] [2019-10-15 03:00:17,628 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:17,628 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:00:17,629 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745016708] [2019-10-15 03:00:17,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:00:17,637 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:17,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:00:17,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:17,655 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2019-10-15 03:00:17,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:17,749 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2019-10-15 03:00:17,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:00:17,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-10-15 03:00:17,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:17,761 INFO L225 Difference]: With dead ends: 76 [2019-10-15 03:00:17,761 INFO L226 Difference]: Without dead ends: 42 [2019-10-15 03:00:17,764 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:00:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-15 03:00:17,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2019-10-15 03:00:17,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-15 03:00:17,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-10-15 03:00:17,816 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 25 [2019-10-15 03:00:17,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:17,816 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-10-15 03:00:17,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:00:17,817 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-10-15 03:00:17,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-15 03:00:17,819 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:17,819 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:17,819 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:17,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:17,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1242296766, now seen corresponding path program 1 times [2019-10-15 03:00:17,820 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:17,820 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661148229] [2019-10-15 03:00:17,821 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:17,821 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:17,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:00:18,113 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661148229] [2019-10-15 03:00:18,113 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434136882] [2019-10-15 03:00:18,114 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 03:00:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:18,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:00:18,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:00:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:00:18,308 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:00:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:00:18,417 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:00:18,417 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [13] total 14 [2019-10-15 03:00:18,418 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441818368] [2019-10-15 03:00:18,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:00:18,420 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:18,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:00:18,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:00:18,421 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 6 states. [2019-10-15 03:00:18,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:18,501 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2019-10-15 03:00:18,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:00:18,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-10-15 03:00:18,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:18,505 INFO L225 Difference]: With dead ends: 55 [2019-10-15 03:00:18,505 INFO L226 Difference]: Without dead ends: 37 [2019-10-15 03:00:18,507 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:00:18,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-15 03:00:18,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-10-15 03:00:18,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-15 03:00:18,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2019-10-15 03:00:18,521 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 31 [2019-10-15 03:00:18,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:18,521 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2019-10-15 03:00:18,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:00:18,522 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2019-10-15 03:00:18,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-15 03:00:18,525 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:18,525 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:18,733 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:00:18,734 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:18,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:18,734 INFO L82 PathProgramCache]: Analyzing trace with hash 575567927, now seen corresponding path program 1 times [2019-10-15 03:00:18,734 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:18,735 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860390794] [2019-10-15 03:00:18,735 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:18,735 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:18,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:00:18,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860390794] [2019-10-15 03:00:18,981 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658842585] [2019-10-15 03:00:18,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:00:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:19,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 03:00:19,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:00:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:00:19,184 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:00:19,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:00:19,277 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:00:19,278 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [10] total 12 [2019-10-15 03:00:19,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276306873] [2019-10-15 03:00:19,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:00:19,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:19,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:00:19,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:00:19,280 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 7 states. [2019-10-15 03:00:19,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:19,371 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2019-10-15 03:00:19,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:00:19,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-10-15 03:00:19,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:19,376 INFO L225 Difference]: With dead ends: 60 [2019-10-15 03:00:19,376 INFO L226 Difference]: Without dead ends: 45 [2019-10-15 03:00:19,378 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:00:19,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-15 03:00:19,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2019-10-15 03:00:19,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-15 03:00:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2019-10-15 03:00:19,397 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 38 [2019-10-15 03:00:19,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:19,397 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2019-10-15 03:00:19,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:00:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2019-10-15 03:00:19,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-15 03:00:19,401 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:19,402 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:19,606 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:00:19,607 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:19,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:19,607 INFO L82 PathProgramCache]: Analyzing trace with hash 812863416, now seen corresponding path program 1 times [2019-10-15 03:00:19,608 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:19,608 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117200410] [2019-10-15 03:00:19,608 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:19,609 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:19,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:19,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:00:19,764 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117200410] [2019-10-15 03:00:19,765 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121927361] [2019-10-15 03:00:19,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:00:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:19,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:00:19,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:00:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:00:19,924 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:00:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:00:20,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1648584790] [2019-10-15 03:00:20,032 INFO L162 IcfgInterpreter]: Started Sifa with 33 locations of interest [2019-10-15 03:00:20,032 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:00:20,045 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:00:20,053 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:00:20,054 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:00:20,180 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 03:00:20,276 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:00:25,699 INFO L199 IcfgInterpreter]: Interpreting procedure sll_circular_update_at with input of size 15 for LOIs [2019-10-15 03:00:25,783 INFO L199 IcfgInterpreter]: Interpreting procedure sll_circular_create with input of size 33 for LOIs [2019-10-15 03:00:31,696 INFO L199 IcfgInterpreter]: Interpreting procedure node_create with input of size 74 for LOIs [2019-10-15 03:00:31,808 INFO L199 IcfgInterpreter]: Interpreting procedure sll_circular_get_data_at with input of size 5 for LOIs [2019-10-15 03:00:31,812 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 03:00:31,816 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:00:32,458 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2019-10-15 03:00:35,260 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2019-10-15 03:00:35,660 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2019-10-15 03:00:36,028 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2019-10-15 03:00:37,189 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 03:00:37,189 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 29] total 41 [2019-10-15 03:00:37,190 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620994158] [2019-10-15 03:00:37,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-10-15 03:00:37,191 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:37,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-10-15 03:00:37,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1517, Unknown=2, NotChecked=0, Total=1640 [2019-10-15 03:00:37,193 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 41 states. [2019-10-15 03:00:44,357 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 180 [2019-10-15 03:00:44,858 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-15 03:00:45,351 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-10-15 03:00:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:47,607 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2019-10-15 03:00:47,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-15 03:00:47,608 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 39 [2019-10-15 03:00:47,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:47,611 INFO L225 Difference]: With dead ends: 62 [2019-10-15 03:00:47,611 INFO L226 Difference]: Without dead ends: 52 [2019-10-15 03:00:47,613 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=375, Invalid=4451, Unknown=4, NotChecked=0, Total=4830 [2019-10-15 03:00:47,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-10-15 03:00:47,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2019-10-15 03:00:47,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-15 03:00:47,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2019-10-15 03:00:47,629 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 39 [2019-10-15 03:00:47,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:47,630 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2019-10-15 03:00:47,630 INFO L463 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-10-15 03:00:47,630 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2019-10-15 03:00:47,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:00:47,631 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:47,631 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:47,837 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:00:47,837 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:47,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:47,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1615255240, now seen corresponding path program 1 times [2019-10-15 03:00:47,838 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:47,838 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948972293] [2019-10-15 03:00:47,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:47,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:47,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:00:49,205 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948972293] [2019-10-15 03:00:49,205 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906806365] [2019-10-15 03:00:49,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:00:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:49,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 104 conjunts are in the unsatisfiable core [2019-10-15 03:00:49,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:00:52,616 WARN L860 $PredicateComparison]: unable to prove that (exists ((sll_circular_update_at_~head.offset Int) (sll_circular_update_at_~data Int)) (let ((.cse0 (+ sll_circular_update_at_~head.offset 4))) (and (<= |c_sll_circular_update_at_#in~head.offset| sll_circular_update_at_~head.offset) (= (store |c_old(#memory_$Pointer$.offset)| |c_sll_circular_update_at_#in~head.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_sll_circular_update_at_#in~head.base|) .cse0 (select (select |c_#memory_$Pointer$.offset| |c_sll_circular_update_at_#in~head.base|) .cse0))) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_sll_circular_update_at_#in~head.base| (store (select |c_old(#memory_$Pointer$.base)| |c_sll_circular_update_at_#in~head.base|) .cse0 (select (select |c_#memory_$Pointer$.base| |c_sll_circular_update_at_#in~head.base|) .cse0)))) (= (store |c_old(#memory_int)| |c_sll_circular_update_at_#in~head.base| (store (select |c_old(#memory_int)| |c_sll_circular_update_at_#in~head.base|) .cse0 sll_circular_update_at_~data)) |c_#memory_int|)))) is different from true [2019-10-15 03:00:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2019-10-15 03:00:53,344 INFO L321 TraceCheckSpWp]: Computing backward predicates...