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/forester-heap/sll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:56:50,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:56:50,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:56:50,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:56:50,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:56:50,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:56:50,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:56:50,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:56:50,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:56:50,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:56:50,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:56:50,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:56:50,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:56:50,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:56:50,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:56:50,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:56:50,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:56:50,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:56:50,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:56:50,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:56:50,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:56:50,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:56:50,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:56:50,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:56:50,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:56:50,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:56:50,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:56:50,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:56:50,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:56:50,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:56:50,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:56:50,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:56:50,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:56:50,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:56:50,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:56:50,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:56:50,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:56:50,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:56:50,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:56:50,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:56:50,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:56:50,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:56:50,597 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:56:50,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:56:50,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:56:50,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:56:50,599 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:56:50,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:56:50,600 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:56:50,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:56:50,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:56:50,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:56:50,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:56:50,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:56:50,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:56:50,603 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:56:50,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:56:50,604 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:56:50,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:56:50,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:56:50,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:56:50,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:56:50,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:56:50,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:56:50,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:56:50,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:56:50,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:56:50,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:56:50,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:56:50,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:56:50,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:56:50,883 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:56:50,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:56:50,899 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:56:50,900 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:56:50,901 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:56:50,901 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-1.i [2019-10-13 21:56:50,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71dc46ab/9c3342a11bd04575ba9b1d33655bb5c4/FLAG1258969f1 [2019-10-13 21:56:51,501 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:56:51,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-1.i [2019-10-13 21:56:51,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71dc46ab/9c3342a11bd04575ba9b1d33655bb5c4/FLAG1258969f1 [2019-10-13 21:56:51,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71dc46ab/9c3342a11bd04575ba9b1d33655bb5c4 [2019-10-13 21:56:51,821 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:56:51,822 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:56:51,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:56:51,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:56:51,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:56:51,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:56:51" (1/1) ... [2019-10-13 21:56:51,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4d736e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:51, skipping insertion in model container [2019-10-13 21:56:51,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:56:51" (1/1) ... [2019-10-13 21:56:51,844 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:56:51,895 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:56:52,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:56:52,317 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:56:52,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:56:52,410 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:56:52,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:52 WrapperNode [2019-10-13 21:56:52,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:56:52,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:56:52,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:56:52,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:56:52,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:52" (1/1) ... [2019-10-13 21:56:52,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:52" (1/1) ... [2019-10-13 21:56:52,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:52" (1/1) ... [2019-10-13 21:56:52,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:52" (1/1) ... [2019-10-13 21:56:52,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:52" (1/1) ... [2019-10-13 21:56:52,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:52" (1/1) ... [2019-10-13 21:56:52,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:52" (1/1) ... [2019-10-13 21:56:52,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:56:52,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:56:52,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:56:52,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:56:52,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:56:52,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:56:52,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:56:52,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:56:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 21:56:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 21:56:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 21:56:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 21:56:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 21:56:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 21:56:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 21:56:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 21:56:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 21:56:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 21:56:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 21:56:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 21:56:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 21:56:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 21:56:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 21:56:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 21:56:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 21:56:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 21:56:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 21:56:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 21:56:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 21:56:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 21:56:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 21:56:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 21:56:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 21:56:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 21:56:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 21:56:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 21:56:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 21:56:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 21:56:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 21:56:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 21:56:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 21:56:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 21:56:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 21:56:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 21:56:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 21:56:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 21:56:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 21:56:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 21:56:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 21:56:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 21:56:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 21:56:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 21:56:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 21:56:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 21:56:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 21:56:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 21:56:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 21:56:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 21:56:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:56:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 21:56:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 21:56:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:56:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 21:56:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 21:56:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 21:56:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 21:56:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 21:56:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 21:56:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 21:56:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 21:56:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 21:56:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:56:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 21:56:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 21:56:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 21:56:52,537 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 21:56:52,537 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 21:56:52,537 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 21:56:52,537 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 21:56:52,537 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 21:56:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 21:56:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 21:56:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 21:56:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 21:56:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 21:56:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 21:56:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 21:56:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 21:56:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 21:56:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 21:56:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 21:56:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 21:56:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 21:56:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 21:56:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 21:56:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 21:56:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 21:56:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 21:56:52,541 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 21:56:52,541 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 21:56:52,541 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 21:56:52,541 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 21:56:52,541 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 21:56:52,541 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 21:56:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 21:56:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 21:56:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 21:56:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 21:56:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 21:56:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 21:56:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 21:56:52,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:56:52,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:56:52,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:56:52,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:56:52,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:56:52,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:56:52,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:56:52,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:56:52,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:56:52,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:56:52,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:56:53,272 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:56:53,272 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-10-13 21:56:53,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:56:53 BoogieIcfgContainer [2019-10-13 21:56:53,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:56:53,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:56:53,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:56:53,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:56:53,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:56:51" (1/3) ... [2019-10-13 21:56:53,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b62359c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:56:53, skipping insertion in model container [2019-10-13 21:56:53,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:52" (2/3) ... [2019-10-13 21:56:53,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b62359c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:56:53, skipping insertion in model container [2019-10-13 21:56:53,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:56:53" (3/3) ... [2019-10-13 21:56:53,283 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-1.i [2019-10-13 21:56:53,293 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:56:53,301 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-13 21:56:53,314 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-13 21:56:53,342 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:56:53,343 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:56:53,343 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:56:53,343 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:56:53,344 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:56:53,344 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:56:53,344 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:56:53,345 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:56:53,365 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-13 21:56:53,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-13 21:56:53,372 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:56:53,374 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:56:53,376 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:56:53,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:56:53,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1881121825, now seen corresponding path program 1 times [2019-10-13 21:56:53,393 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:56:53,394 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797589705] [2019-10-13 21:56:53,394 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:56:53,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:56:53,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:56:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:56:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:56:53,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797589705] [2019-10-13 21:56:53,570 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:56:53,571 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:56:53,571 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238191434] [2019-10-13 21:56:53,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:56:53,579 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:56:53,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:56:53,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:56:53,596 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-10-13 21:56:53,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:56:53,620 INFO L93 Difference]: Finished difference Result 59 states and 89 transitions. [2019-10-13 21:56:53,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:56:53,621 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-10-13 21:56:53,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:56:53,631 INFO L225 Difference]: With dead ends: 59 [2019-10-13 21:56:53,631 INFO L226 Difference]: Without dead ends: 29 [2019-10-13 21:56:53,635 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:56:53,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-13 21:56:53,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-13 21:56:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-13 21:56:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-10-13 21:56:53,693 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 9 [2019-10-13 21:56:53,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:56:53,694 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-10-13 21:56:53,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:56:53,694 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-10-13 21:56:53,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 21:56:53,695 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:56:53,695 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:56:53,695 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:56:53,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:56:53,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1802396536, now seen corresponding path program 1 times [2019-10-13 21:56:53,696 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:56:53,696 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994494432] [2019-10-13 21:56:53,697 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:56:53,697 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:56:53,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:56:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:56:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:56:53,782 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994494432] [2019-10-13 21:56:53,782 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:56:53,783 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:56:53,783 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741914373] [2019-10-13 21:56:53,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:56:53,785 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:56:53,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:56:53,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:56:53,786 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2019-10-13 21:56:53,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:56:53,887 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2019-10-13 21:56:53,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:56:53,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-13 21:56:53,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:56:53,889 INFO L225 Difference]: With dead ends: 35 [2019-10-13 21:56:53,889 INFO L226 Difference]: Without dead ends: 33 [2019-10-13 21:56:53,890 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 [2019-10-13 21:56:53,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-13 21:56:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2019-10-13 21:56:53,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-13 21:56:53,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-10-13 21:56:53,896 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2019-10-13 21:56:53,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:56:53,896 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-10-13 21:56:53,896 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:56:53,896 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-10-13 21:56:53,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 21:56:53,897 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:56:53,897 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:56:53,897 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:56:53,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:56:53,898 INFO L82 PathProgramCache]: Analyzing trace with hash -481985199, now seen corresponding path program 1 times [2019-10-13 21:56:53,898 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:56:53,898 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213415234] [2019-10-13 21:56:53,899 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:56:53,899 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:56:53,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:56:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:56:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:56:54,006 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213415234] [2019-10-13 21:56:54,006 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:56:54,006 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:56:54,007 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800135348] [2019-10-13 21:56:54,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:56:54,007 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:56:54,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:56:54,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:56:54,008 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2019-10-13 21:56:54,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:56:54,187 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2019-10-13 21:56:54,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:56:54,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-13 21:56:54,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:56:54,189 INFO L225 Difference]: With dead ends: 52 [2019-10-13 21:56:54,189 INFO L226 Difference]: Without dead ends: 50 [2019-10-13 21:56:54,191 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:56:54,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-13 21:56:54,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 34. [2019-10-13 21:56:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-13 21:56:54,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2019-10-13 21:56:54,207 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 13 [2019-10-13 21:56:54,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:56:54,208 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2019-10-13 21:56:54,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:56:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2019-10-13 21:56:54,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 21:56:54,209 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:56:54,209 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:56:54,212 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:56:54,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:56:54,212 INFO L82 PathProgramCache]: Analyzing trace with hash -525958984, now seen corresponding path program 1 times [2019-10-13 21:56:54,213 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:56:54,213 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278091464] [2019-10-13 21:56:54,213 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:56:54,213 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:56:54,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:56:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:56:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:56:54,601 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278091464] [2019-10-13 21:56:54,601 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029156325] [2019-10-13 21:56:54,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:56:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:56:54,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-13 21:56:54,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:56:54,846 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-10-13 21:56:54,847 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2019-10-13 21:56:54,847 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:56:54,861 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:56:54,870 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-10-13 21:56:54,871 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:56:54,883 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:56:54,884 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 21:56:54,885 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:29 [2019-10-13 21:56:54,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:56:54,974 INFO L392 ElimStorePlain]: Different costs {1=[|v_#valid_44|], 4=[v_prenex_12]} [2019-10-13 21:56:55,544 INFO L235 Elim1Store]: Index analysis took 127 ms [2019-10-13 21:56:55,560 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:56:55,561 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 149 [2019-10-13 21:56:55,562 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:56:58,678 WARN L191 SmtUtils]: Spent 3.11 s on a formula simplification that was a NOOP. DAG size: 162 [2019-10-13 21:56:58,679 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:56:59,674 INFO L235 Elim1Store]: Index analysis took 498 ms [2019-10-13 21:56:59,689 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:56:59,691 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 259 treesize of output 277 [2019-10-13 21:56:59,693 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:03,584 WARN L191 SmtUtils]: Spent 3.89 s on a formula simplification that was a NOOP. DAG size: 159 [2019-10-13 21:57:03,584 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:03,595 INFO L392 ElimStorePlain]: Different costs {0=[v_prenex_8, v_prenex_9, |v_#memory_$Pointer$.base_37|, |v_#memory_$Pointer$.offset_37|, |#memory_$Pointer$.base|, |#memory_$Pointer$.offset|, |v_#memory_int_46|, v_prenex_2, v_prenex_11], 2=[|v_#memory_int_50|, |v_#memory_int_48|, |v_#memory_int_49|, |v_#memory_int_47|, v_prenex_4, v_prenex_7], 4=[v_prenex_5], 6=[|v_#memory_$Pointer$.base_36|, |v_#memory_$Pointer$.offset_36|]} [2019-10-13 21:57:03,667 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:57:03,917 INFO L235 Elim1Store]: Index analysis took 264 ms [2019-10-13 21:57:04,239 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 228 [2019-10-13 21:57:04,240 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:08,142 WARN L191 SmtUtils]: Spent 3.90 s on a formula simplification that was a NOOP. DAG size: 154 [2019-10-13 21:57:08,143 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:08,271 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:10,592 WARN L191 SmtUtils]: Spent 2.32 s on a formula simplification that was a NOOP. DAG size: 144 [2019-10-13 21:57:10,594 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:10,717 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:57:10,719 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 115 [2019-10-13 21:57:10,719 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:12,967 WARN L191 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 139 [2019-10-13 21:57:12,968 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:13,008 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:57:13,010 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 91 [2019-10-13 21:57:13,011 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:14,198 WARN L191 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 134 [2019-10-13 21:57:14,199 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:14,230 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 83 [2019-10-13 21:57:14,231 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:15,382 WARN L191 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 126 [2019-10-13 21:57:15,383 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:15,426 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 69 [2019-10-13 21:57:15,427 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:16,440 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 118 [2019-10-13 21:57:16,440 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:16,468 INFO L496 ElimStorePlain]: Start of recursive call 10: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 21:57:17,368 WARN L191 SmtUtils]: Spent 899.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-10-13 21:57:17,369 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:17,436 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:57:17,438 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 158 [2019-10-13 21:57:17,439 INFO L496 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:18,060 WARN L191 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-10-13 21:57:18,061 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:18,070 INFO L496 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:18,457 WARN L191 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-10-13 21:57:18,458 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:18,471 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:57:18,476 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2019-10-13 21:57:18,478 INFO L496 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:18,645 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2019-10-13 21:57:18,646 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:18,663 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2019-10-13 21:57:18,663 INFO L496 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:18,785 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-10-13 21:57:18,786 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:18,797 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2019-10-13 21:57:18,798 INFO L496 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:18,893 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:18,898 INFO L496 ElimStorePlain]: Start of recursive call 16: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 21:57:19,009 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-10-13 21:57:19,009 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:19,016 INFO L496 ElimStorePlain]: Start of recursive call 17: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 21:57:19,111 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:19,130 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:57:19,137 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 110 [2019-10-13 21:57:19,138 INFO L496 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:19,204 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:19,213 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:57:19,214 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:57:19,215 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:57:19,229 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 103 [2019-10-13 21:57:19,231 INFO L496 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:19,291 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:19,300 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 89 [2019-10-13 21:57:19,301 INFO L496 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:19,363 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:19,394 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 75 [2019-10-13 21:57:19,395 INFO L496 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:19,437 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:19,442 INFO L496 ElimStorePlain]: Start of recursive call 1: 11 dim-0 vars, 2 dim-1 vars, 18 dim-2 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2019-10-13 21:57:19,443 INFO L221 ElimStorePlain]: Needed 21 recursive calls to eliminate 31 variables, input treesize:404, output treesize:72 [2019-10-13 21:57:19,539 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2019-10-13 21:57:19,540 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:19,549 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:19,549 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:57:19,550 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:3 [2019-10-13 21:57:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:57:19,554 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:57:19,615 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:57:19,640 INFO L392 ElimStorePlain]: Different costs {0=[v_prenex_19, |#memory_$Pointer$.base|, |v_#memory_$Pointer$.base_38|, |#memory_$Pointer$.offset|, |v_#memory_$Pointer$.offset_38|, v_prenex_23, v_prenex_22, v_prenex_16], 2=[|v_#memory_int_48|, v_prenex_14, |v_#memory_int_47|], 3=[|v_#memory_int_49|, |v_#memory_int_46|], 4=[v_prenex_15], 6=[|v_#memory_$Pointer$.base_36|, |v_#memory_$Pointer$.offset_36|]} [2019-10-13 21:57:19,812 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-13 21:57:19,935 INFO L235 Elim1Store]: Index analysis took 167 ms [2019-10-13 21:57:20,387 INFO L341 Elim1Store]: treesize reduction 49, result has 43.7 percent of original size [2019-10-13 21:57:20,388 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 253 treesize of output 251 [2019-10-13 21:57:20,388 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:22,444 WARN L191 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 173 [2019-10-13 21:57:22,445 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:22,517 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-13 21:57:22,703 INFO L341 Elim1Store]: treesize reduction 49, result has 43.7 percent of original size [2019-10-13 21:57:22,703 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 136 treesize of output 134 [2019-10-13 21:57:22,704 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:24,721 WARN L191 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 178 [2019-10-13 21:57:24,722 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:24,827 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:24,828 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 141 [2019-10-13 21:57:24,829 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:57:24,830 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:25,714 WARN L191 SmtUtils]: Spent 884.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-10-13 21:57:25,715 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:25,776 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-13 21:57:25,890 INFO L341 Elim1Store]: treesize reduction 49, result has 43.7 percent of original size [2019-10-13 21:57:25,890 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 95 [2019-10-13 21:57:25,891 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:27,302 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 164 [2019-10-13 21:57:27,303 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:27,395 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:27,395 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 102 [2019-10-13 21:57:27,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:57:27,398 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:27,965 WARN L191 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-10-13 21:57:27,965 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:27,994 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:28,338 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-10-13 21:57:28,339 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:28,364 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-13 21:57:28,427 INFO L341 Elim1Store]: treesize reduction 49, result has 43.7 percent of original size [2019-10-13 21:57:28,428 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 216 treesize of output 214 [2019-10-13 21:57:28,429 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:28,707 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-10-13 21:57:28,707 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:28,717 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:28,890 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-10-13 21:57:28,891 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:28,898 INFO L496 ElimStorePlain]: Start of recursive call 10: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 21:57:29,069 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-10-13 21:57:29,070 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:29,086 INFO L496 ElimStorePlain]: Start of recursive call 11: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 21:57:29,314 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-13 21:57:29,315 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:29,321 INFO L496 ElimStorePlain]: Start of recursive call 12: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 21:57:29,623 WARN L191 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2019-10-13 21:57:29,623 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:29,630 INFO L496 ElimStorePlain]: Start of recursive call 13: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 21:57:29,755 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-10-13 21:57:29,756 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:29,766 INFO L496 ElimStorePlain]: Start of recursive call 14: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 21:57:29,849 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:29,854 INFO L496 ElimStorePlain]: Start of recursive call 15: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 21:57:29,927 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:29,959 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:29,959 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 184 [2019-10-13 21:57:29,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:57:29,961 INFO L496 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:30,038 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:30,063 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:30,064 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 147 [2019-10-13 21:57:30,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:57:30,066 INFO L496 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:30,099 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:30,101 INFO L496 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 16 dim-2 vars, End of recursive call: 11 dim-0 vars, and 2 xjuncts. [2019-10-13 21:57:30,102 INFO L221 ElimStorePlain]: Needed 17 recursive calls to eliminate 25 variables, input treesize:390, output treesize:149 [2019-10-13 21:57:30,170 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:57:30,171 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:30,172 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:30,173 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_int_45| vanished before elimination [2019-10-13 21:57:30,173 INFO L496 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:57:30,174 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:58, output treesize:1 [2019-10-13 21:57:30,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:57:30,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [856673589] [2019-10-13 21:57:30,216 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 21:57:30,217 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:57:30,227 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:57:30,244 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:57:30,244 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:57:30,355 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs