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/dll-rb-cnstr_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:58:51,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:58:51,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:58:51,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:58:51,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:58:51,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:58:51,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:58:51,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:58:51,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:58:51,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:58:51,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:58:51,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:58:51,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:58:51,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:58:51,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:58:51,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:58:51,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:58:51,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:58:51,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:58:51,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:58:51,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:58:51,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:58:51,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:58:51,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:58:51,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:58:51,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:58:51,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:58:51,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:58:51,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:58:51,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:58:51,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:58:51,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:58:51,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:58:51,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:58:51,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:58:51,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:58:51,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:58:51,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:58:51,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:58:51,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:58:51,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:58:51,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:58:51,599 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:58:51,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:58:51,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:58:51,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:58:51,601 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:58:51,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:58:51,602 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:58:51,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:58:51,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:58:51,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:58:51,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:58:51,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:58:51,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:58:51,603 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:58:51,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:58:51,603 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:58:51,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:58:51,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:58:51,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:58:51,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:58:51,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:58:51,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:58:51,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:58:51,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:58:51,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:58:51,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:58:51,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:58:51,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:58:51,606 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 01:58:51,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:58:51,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:58:51,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:58:51,892 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:58:51,892 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:58:51,893 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i [2019-10-15 01:58:51,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d6d3fc0e/86255014af52415699743a2b62cfe9e8/FLAG57f8852e3 [2019-10-15 01:58:52,552 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:58:52,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i [2019-10-15 01:58:52,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d6d3fc0e/86255014af52415699743a2b62cfe9e8/FLAG57f8852e3 [2019-10-15 01:58:52,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d6d3fc0e/86255014af52415699743a2b62cfe9e8 [2019-10-15 01:58:52,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:58:52,885 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:58:52,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:58:52,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:58:52,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:58:52,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:58:52" (1/1) ... [2019-10-15 01:58:52,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@287875cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:52, skipping insertion in model container [2019-10-15 01:58:52,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:58:52" (1/1) ... [2019-10-15 01:58:52,900 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:58:52,939 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:58:53,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:58:53,380 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:58:53,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:58:53,492 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:58:53,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:53 WrapperNode [2019-10-15 01:58:53,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:58:53,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:58:53,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:58:53,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:58:53,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:53" (1/1) ... [2019-10-15 01:58:53,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:53" (1/1) ... [2019-10-15 01:58:53,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:53" (1/1) ... [2019-10-15 01:58:53,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:53" (1/1) ... [2019-10-15 01:58:53,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:53" (1/1) ... [2019-10-15 01:58:53,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:53" (1/1) ... [2019-10-15 01:58:53,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:53" (1/1) ... [2019-10-15 01:58:53,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:58:53,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:58:53,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:58:53,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:58:53,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:58:53,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:58:53,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:58:53,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:58:53,633 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 01:58:53,633 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 01:58:53,634 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 01:58:53,635 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 01:58:53,635 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 01:58:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 01:58:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 01:58:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 01:58:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 01:58:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 01:58:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 01:58:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 01:58:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 01:58:53,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 01:58:53,640 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 01:58:53,640 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 01:58:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 01:58:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 01:58:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 01:58:53,642 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 01:58:53,642 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 01:58:53,642 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 01:58:53,642 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 01:58:53,642 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 01:58:53,642 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 01:58:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 01:58:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 01:58:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 01:58:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 01:58:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 01:58:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 01:58:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 01:58:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 01:58:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 01:58:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 01:58:53,645 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 01:58:53,645 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 01:58:53,645 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 01:58:53,645 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 01:58:53,645 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 01:58:53,645 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 01:58:53,645 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 01:58:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 01:58:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 01:58:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 01:58:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 01:58:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 01:58:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 01:58:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 01:58:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 01:58:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:58:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 01:58:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 01:58:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:58:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 01:58:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 01:58:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 01:58:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 01:58:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 01:58:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 01:58:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 01:58:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 01:58:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 01:58:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:58:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 01:58:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 01:58:53,651 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 01:58:53,651 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 01:58:53,651 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 01:58:53,651 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 01:58:53,652 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 01:58:53,652 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 01:58:53,652 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 01:58:53,653 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 01:58:53,653 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 01:58:53,653 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 01:58:53,653 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 01:58:53,654 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 01:58:53,654 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 01:58:53,654 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 01:58:53,655 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 01:58:53,655 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 01:58:53,655 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 01:58:53,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 01:58:53,656 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 01:58:53,656 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 01:58:53,656 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 01:58:53,656 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 01:58:53,657 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 01:58:53,657 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 01:58:53,657 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 01:58:53,657 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 01:58:53,657 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 01:58:53,657 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 01:58:53,657 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 01:58:53,658 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 01:58:53,658 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 01:58:53,658 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 01:58:53,658 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 01:58:53,658 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 01:58:53,658 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 01:58:53,658 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 01:58:53,659 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 01:58:53,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:58:53,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:58:53,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:58:53,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:58:53,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:58:53,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:58:53,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:58:53,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:58:53,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:58:53,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:58:53,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:58:54,660 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:58:54,661 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-10-15 01:58:54,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:58:54 BoogieIcfgContainer [2019-10-15 01:58:54,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:58:54,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:58:54,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:58:54,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:58:54,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:58:52" (1/3) ... [2019-10-15 01:58:54,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25acbe0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:58:54, skipping insertion in model container [2019-10-15 01:58:54,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:53" (2/3) ... [2019-10-15 01:58:54,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25acbe0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:58:54, skipping insertion in model container [2019-10-15 01:58:54,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:58:54" (3/3) ... [2019-10-15 01:58:54,671 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-1.i [2019-10-15 01:58:54,681 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:58:54,689 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-10-15 01:58:54,700 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-10-15 01:58:54,725 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:58:54,726 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:58:54,726 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:58:54,726 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:58:54,727 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:58:54,727 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:58:54,727 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:58:54,727 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:58:54,746 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2019-10-15 01:58:54,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-15 01:58:54,753 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:58:54,754 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:58:54,757 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:58:54,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:58:54,763 INFO L82 PathProgramCache]: Analyzing trace with hash 299738079, now seen corresponding path program 1 times [2019-10-15 01:58:54,772 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:58:54,773 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349633616] [2019-10-15 01:58:54,773 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:54,774 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:54,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:58:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:58:54,955 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 01:58:54,956 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349633616] [2019-10-15 01:58:54,957 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:58:54,957 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:58:54,957 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998667499] [2019-10-15 01:58:54,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:58:54,962 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:58:54,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:58:54,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:58:54,979 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2019-10-15 01:58:55,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:58:55,004 INFO L93 Difference]: Finished difference Result 89 states and 139 transitions. [2019-10-15 01:58:55,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:58:55,006 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-10-15 01:58:55,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:58:55,016 INFO L225 Difference]: With dead ends: 89 [2019-10-15 01:58:55,016 INFO L226 Difference]: Without dead ends: 43 [2019-10-15 01:58:55,019 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:58:55,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-15 01:58:55,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-10-15 01:58:55,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-15 01:58:55,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2019-10-15 01:58:55,056 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 9 [2019-10-15 01:58:55,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:58:55,057 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2019-10-15 01:58:55,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:58:55,057 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2019-10-15 01:58:55,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:58:55,057 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:58:55,058 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:58:55,058 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:58:55,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:58:55,058 INFO L82 PathProgramCache]: Analyzing trace with hash 644598331, now seen corresponding path program 1 times [2019-10-15 01:58:55,059 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:58:55,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102419485] [2019-10-15 01:58:55,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:55,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:55,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:58:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:58:55,249 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 01:58:55,250 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102419485] [2019-10-15 01:58:55,250 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:58:55,252 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:58:55,252 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551951074] [2019-10-15 01:58:55,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:58:55,255 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:58:55,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:58:55,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:58:55,256 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 4 states. [2019-10-15 01:58:55,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:58:55,392 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2019-10-15 01:58:55,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:58:55,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-15 01:58:55,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:58:55,393 INFO L225 Difference]: With dead ends: 43 [2019-10-15 01:58:55,394 INFO L226 Difference]: Without dead ends: 41 [2019-10-15 01:58:55,395 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 01:58:55,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-15 01:58:55,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-10-15 01:58:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-15 01:58:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2019-10-15 01:58:55,401 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 10 [2019-10-15 01:58:55,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:58:55,401 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2019-10-15 01:58:55,401 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:58:55,401 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2019-10-15 01:58:55,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:58:55,402 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:58:55,402 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:58:55,402 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:58:55,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:58:55,403 INFO L82 PathProgramCache]: Analyzing trace with hash 639051341, now seen corresponding path program 1 times [2019-10-15 01:58:55,403 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:58:55,403 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630871977] [2019-10-15 01:58:55,403 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:55,404 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:55,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:58:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:58:55,478 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 01:58:55,479 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630871977] [2019-10-15 01:58:55,479 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:58:55,481 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:58:55,481 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153116365] [2019-10-15 01:58:55,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:58:55,481 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:58:55,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:58:55,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:58:55,482 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 4 states. [2019-10-15 01:58:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:58:55,691 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2019-10-15 01:58:55,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:58:55,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-15 01:58:55,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:58:55,694 INFO L225 Difference]: With dead ends: 44 [2019-10-15 01:58:55,694 INFO L226 Difference]: Without dead ends: 40 [2019-10-15 01:58:55,695 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 01:58:55,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-15 01:58:55,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2019-10-15 01:58:55,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-15 01:58:55,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-10-15 01:58:55,700 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 10 [2019-10-15 01:58:55,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:58:55,700 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2019-10-15 01:58:55,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:58:55,701 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2019-10-15 01:58:55,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 01:58:55,701 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:58:55,701 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:58:55,702 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:58:55,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:58:55,702 INFO L82 PathProgramCache]: Analyzing trace with hash 434039850, now seen corresponding path program 1 times [2019-10-15 01:58:55,703 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:58:55,703 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588391803] [2019-10-15 01:58:55,703 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:55,703 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:55,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:58:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:58:55,816 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 01:58:55,818 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588391803] [2019-10-15 01:58:55,818 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:58:55,818 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:58:55,818 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438749634] [2019-10-15 01:58:55,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:58:55,819 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:58:55,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:58:55,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:58:55,820 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2019-10-15 01:58:56,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:58:56,151 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2019-10-15 01:58:56,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:58:56,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-15 01:58:56,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:58:56,153 INFO L225 Difference]: With dead ends: 37 [2019-10-15 01:58:56,153 INFO L226 Difference]: Without dead ends: 35 [2019-10-15 01:58:56,154 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 01:58:56,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-15 01:58:56,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-10-15 01:58:56,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-15 01:58:56,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-10-15 01:58:56,163 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2019-10-15 01:58:56,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:58:56,164 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2019-10-15 01:58:56,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:58:56,164 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2019-10-15 01:58:56,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 01:58:56,165 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:58:56,165 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:58:56,166 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:58:56,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:58:56,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1607525391, now seen corresponding path program 1 times [2019-10-15 01:58:56,167 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:58:56,167 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808378877] [2019-10-15 01:58:56,167 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:56,168 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:56,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:58:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:58:56,291 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 01:58:56,291 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808378877] [2019-10-15 01:58:56,292 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:58:56,292 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:58:56,292 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206315343] [2019-10-15 01:58:56,292 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:58:56,293 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:58:56,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:58:56,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:58:56,296 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2019-10-15 01:58:56,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:58:56,794 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2019-10-15 01:58:56,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:58:56,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-15 01:58:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:58:56,797 INFO L225 Difference]: With dead ends: 60 [2019-10-15 01:58:56,797 INFO L226 Difference]: Without dead ends: 58 [2019-10-15 01:58:56,798 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:58:56,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-15 01:58:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 42. [2019-10-15 01:58:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-15 01:58:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-10-15 01:58:56,806 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 13 [2019-10-15 01:58:56,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:58:56,806 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2019-10-15 01:58:56,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:58:56,807 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2019-10-15 01:58:56,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-15 01:58:56,807 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:58:56,808 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:58:56,808 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:58:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:58:56,808 INFO L82 PathProgramCache]: Analyzing trace with hash -2116307816, now seen corresponding path program 1 times [2019-10-15 01:58:56,809 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:58:56,809 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327304541] [2019-10-15 01:58:56,809 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:56,809 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:56,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:58:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:58:56,885 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 01:58:56,885 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327304541] [2019-10-15 01:58:56,886 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:58:56,886 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:58:56,886 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973266131] [2019-10-15 01:58:56,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:58:56,887 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:58:56,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:58:56,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:58:56,887 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 5 states. [2019-10-15 01:58:57,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:58:57,232 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2019-10-15 01:58:57,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:58:57,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-10-15 01:58:57,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:58:57,235 INFO L225 Difference]: With dead ends: 57 [2019-10-15 01:58:57,236 INFO L226 Difference]: Without dead ends: 45 [2019-10-15 01:58:57,237 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:58:57,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-15 01:58:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2019-10-15 01:58:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-15 01:58:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2019-10-15 01:58:57,250 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 17 [2019-10-15 01:58:57,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:58:57,250 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2019-10-15 01:58:57,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:58:57,251 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2019-10-15 01:58:57,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-15 01:58:57,252 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:58:57,252 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:58:57,252 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:58:57,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:58:57,253 INFO L82 PathProgramCache]: Analyzing trace with hash 17922409, now seen corresponding path program 1 times [2019-10-15 01:58:57,253 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:58:57,254 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615774085] [2019-10-15 01:58:57,254 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:57,254 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:57,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:58:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:58:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:58:57,354 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615774085] [2019-10-15 01:58:57,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9112481] [2019-10-15 01:58:57,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:58:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:58:57,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 01:58:57,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:58:57,592 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:58:57,596 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:58:57,600 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:58:57,618 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2019-10-15 01:58:57,620 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:58:57,635 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:58:57,644 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:58:57,648 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:58:57,649 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:58:57,652 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2019-10-15 01:58:57,652 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:58:57,667 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:58:57,667 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:58:57,668 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:58, output treesize:36 [2019-10-15 01:58:57,723 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 22 treesize of output 10 [2019-10-15 01:58:57,724 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:58:57,736 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:58:57,740 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:58:57,741 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 1 case distinctions, treesize of input 22 treesize of output 10 [2019-10-15 01:58:57,742 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:58:57,747 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:58:57,748 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:58:57,748 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:7 [2019-10-15 01:58:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:58:57,754 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:58:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:58:57,782 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [646198423] [2019-10-15 01:58:57,819 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-15 01:58:57,819 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:58:57,826 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:58:57,841 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:58:57,842 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:58:57,929 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 01:58:58,191 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 01:58:58,207 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 01:58:58,989 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:58:58,989 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5, 5, 5] total 15 [2019-10-15 01:58:58,990 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971683961] [2019-10-15 01:58:58,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:58:58,992 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:58:58,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:58:58,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:58:58,993 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 10 states. [2019-10-15 01:59:00,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:00,055 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2019-10-15 01:59:00,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:59:00,056 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-10-15 01:59:00,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:00,056 INFO L225 Difference]: With dead ends: 50 [2019-10-15 01:59:00,057 INFO L226 Difference]: Without dead ends: 24 [2019-10-15 01:59:00,057 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:59:00,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-15 01:59:00,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-15 01:59:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-15 01:59:00,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-10-15 01:59:00,061 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2019-10-15 01:59:00,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:00,061 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-10-15 01:59:00,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:59:00,061 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-10-15 01:59:00,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-15 01:59:00,062 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:00,062 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:00,263 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:59:00,264 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:00,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:00,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1465232090, now seen corresponding path program 1 times [2019-10-15 01:59:00,265 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:00,265 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825329393] [2019-10-15 01:59:00,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:00,266 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:00,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:00,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825329393] [2019-10-15 01:59:00,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746261120] [2019-10-15 01:59:00,583 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 01:59:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:00,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-15 01:59:00,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:59:31,556 WARN L191 SmtUtils]: Spent 29.37 s on a formula simplification that was a NOOP. DAG size: 209