java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/heap-data/calendar.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 00:11:20,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 00:11:20,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 00:11:20,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 00:11:20,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 00:11:20,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 00:11:20,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 00:11:20,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 00:11:20,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 00:11:20,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 00:11:20,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 00:11:20,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 00:11:20,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 00:11:20,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 00:11:20,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 00:11:20,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 00:11:20,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 00:11:20,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 00:11:20,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 00:11:20,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 00:11:20,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 00:11:20,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 00:11:20,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 00:11:20,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 00:11:20,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 00:11:20,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 00:11:20,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 00:11:20,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 00:11:20,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 00:11:20,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 00:11:20,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 00:11:20,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 00:11:20,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 00:11:20,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 00:11:20,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 00:11:20,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 00:11:20,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 00:11:20,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 00:11:20,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 00:11:20,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 00:11:20,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 00:11:20,736 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 00:11:20,752 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 00:11:20,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 00:11:20,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 00:11:20,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 00:11:20,758 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 00:11:20,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 00:11:20,758 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 00:11:20,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 00:11:20,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 00:11:20,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 00:11:20,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 00:11:20,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 00:11:20,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 00:11:20,759 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 00:11:20,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 00:11:20,760 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 00:11:20,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 00:11:20,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 00:11:20,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 00:11:20,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 00:11:20,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 00:11:20,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:11:20,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 00:11:20,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 00:11:20,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 00:11:20,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 00:11:20,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 00:11:20,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 00:11:20,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 00:11:21,064 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 00:11:21,086 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 00:11:21,089 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 00:11:21,091 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 00:11:21,091 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 00:11:21,092 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/calendar.i [2019-10-15 00:11:21,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58109693b/092c846167c94ff1b1b995a2a642143b/FLAGda3d2cdd3 [2019-10-15 00:11:21,686 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 00:11:21,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/calendar.i [2019-10-15 00:11:21,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58109693b/092c846167c94ff1b1b995a2a642143b/FLAGda3d2cdd3 [2019-10-15 00:11:21,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58109693b/092c846167c94ff1b1b995a2a642143b [2019-10-15 00:11:21,987 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 00:11:21,992 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 00:11:21,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 00:11:21,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 00:11:21,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 00:11:21,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:11:21" (1/1) ... [2019-10-15 00:11:22,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a972dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:22, skipping insertion in model container [2019-10-15 00:11:22,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:11:21" (1/1) ... [2019-10-15 00:11:22,008 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 00:11:22,050 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 00:11:22,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:11:22,646 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 00:11:22,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:11:22,748 INFO L192 MainTranslator]: Completed translation [2019-10-15 00:11:22,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:22 WrapperNode [2019-10-15 00:11:22,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 00:11:22,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 00:11:22,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 00:11:22,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 00:11:22,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:22" (1/1) ... [2019-10-15 00:11:22,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:22" (1/1) ... [2019-10-15 00:11:22,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:22" (1/1) ... [2019-10-15 00:11:22,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:22" (1/1) ... [2019-10-15 00:11:22,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:22" (1/1) ... [2019-10-15 00:11:22,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:22" (1/1) ... [2019-10-15 00:11:22,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:22" (1/1) ... [2019-10-15 00:11:22,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 00:11:22,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 00:11:22,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 00:11:22,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 00:11:22,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:22" (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 00:11:22,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 00:11:22,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 00:11:22,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 00:11:22,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 00:11:22,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 00:11:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 00:11:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 00:11:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 00:11:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 00:11:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 00:11:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 00:11:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 00:11:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 00:11:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 00:11:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 00:11:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 00:11:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 00:11:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 00:11:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 00:11:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 00:11:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 00:11:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 00:11:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 00:11:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 00:11:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 00:11:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 00:11:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 00:11:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 00:11:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 00:11:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 00:11:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 00:11:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 00:11:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 00:11:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 00:11:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 00:11:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 00:11:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 00:11:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 00:11:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 00:11:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 00:11:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 00:11:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 00:11:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 00:11:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 00:11:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 00:11:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 00:11:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 00:11:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 00:11:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 00:11:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 00:11:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 00:11:22,915 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 00:11:22,915 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 00:11:22,915 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 00:11:22,915 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 00:11:22,915 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 00:11:22,915 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 00:11:22,915 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 00:11:22,916 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 00:11:22,916 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 00:11:22,916 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 00:11:22,916 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 00:11:22,916 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 00:11:22,916 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 00:11:22,917 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 00:11:22,917 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 00:11:22,917 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 00:11:22,917 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 00:11:22,917 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 00:11:22,917 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 00:11:22,918 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 00:11:22,918 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 00:11:22,918 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 00:11:22,918 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 00:11:22,918 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 00:11:22,918 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 00:11:22,918 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 00:11:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 00:11:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 00:11:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 00:11:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 00:11:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 00:11:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 00:11:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 00:11:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 00:11:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 00:11:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 00:11:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 00:11:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 00:11:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 00:11:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 00:11:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 00:11:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 00:11:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 00:11:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 00:11:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 00:11:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 00:11:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 00:11:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 00:11:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 00:11:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 00:11:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 00:11:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 00:11:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 00:11:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 00:11:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 00:11:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 00:11:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 00:11:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 00:11:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 00:11:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 00:11:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 00:11:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 00:11:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 00:11:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 00:11:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 00:11:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 00:11:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 00:11:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 00:11:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 00:11:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 00:11:23,500 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 00:11:23,500 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 00:11:23,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:11:23 BoogieIcfgContainer [2019-10-15 00:11:23,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 00:11:23,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 00:11:23,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 00:11:23,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 00:11:23,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:11:21" (1/3) ... [2019-10-15 00:11:23,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53db9beb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:11:23, skipping insertion in model container [2019-10-15 00:11:23,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:11:22" (2/3) ... [2019-10-15 00:11:23,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53db9beb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:11:23, skipping insertion in model container [2019-10-15 00:11:23,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:11:23" (3/3) ... [2019-10-15 00:11:23,511 INFO L109 eAbstractionObserver]: Analyzing ICFG calendar.i [2019-10-15 00:11:23,522 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 00:11:23,530 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 00:11:23,540 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 00:11:23,566 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 00:11:23,566 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 00:11:23,566 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 00:11:23,566 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 00:11:23,567 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 00:11:23,567 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 00:11:23,567 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 00:11:23,567 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 00:11:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-10-15 00:11:23,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 00:11:23,588 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:11:23,589 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:11:23,592 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:11:23,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:11:23,598 INFO L82 PathProgramCache]: Analyzing trace with hash 2072180544, now seen corresponding path program 1 times [2019-10-15 00:11:23,606 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:11:23,606 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607584534] [2019-10-15 00:11:23,607 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:23,607 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:23,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:11:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:23,735 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 00:11:23,736 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607584534] [2019-10-15 00:11:23,737 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:11:23,738 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 00:11:23,738 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881847006] [2019-10-15 00:11:23,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 00:11:23,745 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:11:23,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 00:11:23,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 00:11:23,763 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-10-15 00:11:23,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:11:23,784 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2019-10-15 00:11:23,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 00:11:23,786 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-15 00:11:23,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:11:23,795 INFO L225 Difference]: With dead ends: 41 [2019-10-15 00:11:23,795 INFO L226 Difference]: Without dead ends: 22 [2019-10-15 00:11:23,799 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 00:11:23,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-15 00:11:23,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-15 00:11:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-15 00:11:23,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2019-10-15 00:11:23,839 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 14 [2019-10-15 00:11:23,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:11:23,839 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2019-10-15 00:11:23,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 00:11:23,840 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2019-10-15 00:11:23,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 00:11:23,841 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:11:23,841 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:11:23,841 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:11:23,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:11:23,842 INFO L82 PathProgramCache]: Analyzing trace with hash -868234929, now seen corresponding path program 1 times [2019-10-15 00:11:23,842 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:11:23,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346350016] [2019-10-15 00:11:23,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:23,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:23,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:11:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:23,948 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 00:11:23,948 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346350016] [2019-10-15 00:11:23,949 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:11:23,949 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 00:11:23,949 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431729613] [2019-10-15 00:11:23,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 00:11:23,951 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:11:23,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 00:11:23,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 00:11:23,952 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand 4 states. [2019-10-15 00:11:24,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:11:24,020 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2019-10-15 00:11:24,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 00:11:24,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-10-15 00:11:24,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:11:24,022 INFO L225 Difference]: With dead ends: 39 [2019-10-15 00:11:24,022 INFO L226 Difference]: Without dead ends: 27 [2019-10-15 00:11:24,023 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 00:11:24,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-15 00:11:24,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-10-15 00:11:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-15 00:11:24,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-10-15 00:11:24,052 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2019-10-15 00:11:24,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:11:24,053 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-10-15 00:11:24,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 00:11:24,053 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-10-15 00:11:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-15 00:11:24,055 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:11:24,056 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:11:24,056 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:11:24,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:11:24,057 INFO L82 PathProgramCache]: Analyzing trace with hash -899083565, now seen corresponding path program 1 times [2019-10-15 00:11:24,057 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:11:24,057 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555252841] [2019-10-15 00:11:24,058 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:24,058 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:24,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:11:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:11:24,391 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555252841] [2019-10-15 00:11:24,392 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:11:24,392 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 00:11:24,392 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400183704] [2019-10-15 00:11:24,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 00:11:24,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:11:24,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 00:11:24,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-15 00:11:24,396 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 8 states. [2019-10-15 00:11:25,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:11:25,046 INFO L93 Difference]: Finished difference Result 82 states and 109 transitions. [2019-10-15 00:11:25,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-15 00:11:25,047 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2019-10-15 00:11:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:11:25,051 INFO L225 Difference]: With dead ends: 82 [2019-10-15 00:11:25,052 INFO L226 Difference]: Without dead ends: 72 [2019-10-15 00:11:25,054 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2019-10-15 00:11:25,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-10-15 00:11:25,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 31. [2019-10-15 00:11:25,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-15 00:11:25,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2019-10-15 00:11:25,077 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 21 [2019-10-15 00:11:25,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:11:25,078 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2019-10-15 00:11:25,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 00:11:25,079 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2019-10-15 00:11:25,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-15 00:11:25,080 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:11:25,080 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:11:25,082 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:11:25,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:11:25,083 INFO L82 PathProgramCache]: Analyzing trace with hash -729273639, now seen corresponding path program 1 times [2019-10-15 00:11:25,083 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:11:25,083 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952951590] [2019-10-15 00:11:25,083 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:25,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:25,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:11:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 00:11:25,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952951590] [2019-10-15 00:11:25,216 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:11:25,216 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 00:11:25,216 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946513110] [2019-10-15 00:11:25,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 00:11:25,218 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:11:25,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 00:11:25,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-15 00:11:25,220 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand 5 states. [2019-10-15 00:11:25,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:11:25,308 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2019-10-15 00:11:25,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 00:11:25,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-10-15 00:11:25,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:11:25,309 INFO L225 Difference]: With dead ends: 54 [2019-10-15 00:11:25,310 INFO L226 Difference]: Without dead ends: 42 [2019-10-15 00:11:25,310 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-15 00:11:25,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-15 00:11:25,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2019-10-15 00:11:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-15 00:11:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2019-10-15 00:11:25,318 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 23 [2019-10-15 00:11:25,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:11:25,319 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2019-10-15 00:11:25,320 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 00:11:25,320 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2019-10-15 00:11:25,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-15 00:11:25,322 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:11:25,322 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:11:25,323 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:11:25,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:11:25,323 INFO L82 PathProgramCache]: Analyzing trace with hash -729214057, now seen corresponding path program 1 times [2019-10-15 00:11:25,323 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:11:25,324 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942945875] [2019-10-15 00:11:25,324 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:25,325 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:25,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:11:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 00:11:25,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942945875] [2019-10-15 00:11:25,410 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:11:25,411 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 00:11:25,411 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880044175] [2019-10-15 00:11:25,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 00:11:25,412 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:11:25,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 00:11:25,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 00:11:25,413 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand 4 states. [2019-10-15 00:11:25,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:11:25,438 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2019-10-15 00:11:25,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 00:11:25,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2019-10-15 00:11:25,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:11:25,440 INFO L225 Difference]: With dead ends: 38 [2019-10-15 00:11:25,440 INFO L226 Difference]: Without dead ends: 36 [2019-10-15 00:11:25,440 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 00:11:25,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-15 00:11:25,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-10-15 00:11:25,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-15 00:11:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2019-10-15 00:11:25,447 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 23 [2019-10-15 00:11:25,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:11:25,447 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2019-10-15 00:11:25,447 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 00:11:25,447 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2019-10-15 00:11:25,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-15 00:11:25,448 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:11:25,448 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:11:25,449 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:11:25,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:11:25,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1045733723, now seen corresponding path program 1 times [2019-10-15 00:11:25,449 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:11:25,450 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275262472] [2019-10-15 00:11:25,450 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:25,450 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:25,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:11:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:11:25,589 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275262472] [2019-10-15 00:11:25,589 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:11:25,589 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 00:11:25,589 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394844554] [2019-10-15 00:11:25,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 00:11:25,590 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:11:25,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 00:11:25,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 00:11:25,590 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand 8 states. [2019-10-15 00:11:25,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:11:25,850 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2019-10-15 00:11:25,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 00:11:25,851 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2019-10-15 00:11:25,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:11:25,852 INFO L225 Difference]: With dead ends: 47 [2019-10-15 00:11:25,852 INFO L226 Difference]: Without dead ends: 45 [2019-10-15 00:11:25,852 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-10-15 00:11:25,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-15 00:11:25,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-10-15 00:11:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-15 00:11:25,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2019-10-15 00:11:25,859 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 23 [2019-10-15 00:11:25,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:11:25,859 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2019-10-15 00:11:25,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 00:11:25,859 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2019-10-15 00:11:25,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-15 00:11:25,860 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:11:25,860 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:11:25,861 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:11:25,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:11:25,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1117039233, now seen corresponding path program 1 times [2019-10-15 00:11:25,861 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:11:25,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778079998] [2019-10-15 00:11:25,862 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:25,862 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:25,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:11:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:11:25,943 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778079998] [2019-10-15 00:11:25,944 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871578460] [2019-10-15 00:11:25,944 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 00:11:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:26,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-15 00:11:26,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:11:26,129 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 11 treesize of output 7 [2019-10-15 00:11:26,129 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 00:11:26,146 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 00:11:26,149 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 11 treesize of output 7 [2019-10-15 00:11:26,150 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 00:11:26,155 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 00:11:26,156 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 00:11:26,156 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2019-10-15 00:11:26,172 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-10-15 00:11:26,172 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 00:11:26,189 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 00:11:26,191 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-10-15 00:11:26,192 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 00:11:26,200 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 00:11:26,200 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 00:11:26,201 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2019-10-15 00:11:26,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:11:26,205 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:11:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:11:26,222 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1276402659] [2019-10-15 00:11:26,229 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 30 [2019-10-15 00:11:26,269 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 00:11:26,270 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 00:11:26,440 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-15 00:11:26,442 INFO L272 AbstractInterpreter]: Visited 14 different actions 14 times. Never merged. Never widened. Performed 37 root evaluator evaluations with a maximum evaluation depth of 7. Performed 37 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 38 variables. [2019-10-15 00:11:26,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:11:26,448 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-15 00:11:26,544 INFO L227 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 73.17% of their original sizes. [2019-10-15 00:11:26,545 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-15 00:11:26,568 INFO L553 sIntCurrentIteration]: We unified 28 AI predicates to 28 [2019-10-15 00:11:26,569 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-15 00:11:26,570 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-15 00:11:26,570 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 6, 6] total 11 [2019-10-15 00:11:26,570 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675486306] [2019-10-15 00:11:26,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 00:11:26,571 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-15 00:11:26,572 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-15 00:11:26,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 00:11:26,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-15 00:11:26,572 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand 7 states. [2019-10-15 00:11:26,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:11:26,682 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2019-10-15 00:11:26,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 00:11:26,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2019-10-15 00:11:26,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:11:26,683 INFO L225 Difference]: With dead ends: 43 [2019-10-15 00:11:26,686 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 00:11:26,687 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 00:11:26,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 00:11:26,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 00:11:26,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 00:11:26,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 00:11:26,688 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2019-10-15 00:11:26,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:11:26,688 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 00:11:26,689 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 00:11:26,689 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 00:11:26,689 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 00:11:26,895 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:11:26,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 00:11:26,969 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-15 00:11:26,969 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 00:11:26,969 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 00:11:26,970 INFO L443 ceAbstractionStarter]: For program point __bswap_32ENTRY(lines 64 68) no Hoare annotation was computed. [2019-10-15 00:11:26,970 INFO L443 ceAbstractionStarter]: For program point __bswap_32FINAL(lines 64 68) no Hoare annotation was computed. [2019-10-15 00:11:26,970 INFO L443 ceAbstractionStarter]: For program point __bswap_32EXIT(lines 64 68) no Hoare annotation was computed. [2019-10-15 00:11:26,970 INFO L443 ceAbstractionStarter]: For program point __bswap_64ENTRY(lines 69 73) no Hoare annotation was computed. [2019-10-15 00:11:26,970 INFO L443 ceAbstractionStarter]: For program point __bswap_64FINAL(lines 69 73) no Hoare annotation was computed. [2019-10-15 00:11:26,970 INFO L443 ceAbstractionStarter]: For program point __bswap_64EXIT(lines 69 73) no Hoare annotation was computed. [2019-10-15 00:11:26,970 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 00:11:26,970 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 00:11:26,971 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 00:11:26,971 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 00:11:26,971 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 579) no Hoare annotation was computed. [2019-10-15 00:11:26,971 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 562 582) no Hoare annotation was computed. [2019-10-15 00:11:26,971 INFO L443 ceAbstractionStarter]: For program point L564-1(lines 564 575) no Hoare annotation was computed. [2019-10-15 00:11:26,972 INFO L439 ceAbstractionStarter]: At program point L564-3(lines 564 575) the Hoare annotation is: (and (= 0 main_~l~0.base) (= main_~l~0.offset 0)) [2019-10-15 00:11:26,972 INFO L443 ceAbstractionStarter]: For program point L564-4(lines 564 575) no Hoare annotation was computed. [2019-10-15 00:11:26,972 INFO L439 ceAbstractionStarter]: At program point L577-2(lines 577 581) the Hoare annotation is: (and (= 0 main_~l~0.base) (= 0 main_~l~0.offset) (= 0 main_~i~0.base) (= 0 main_~i~0.offset)) [2019-10-15 00:11:26,972 INFO L443 ceAbstractionStarter]: For program point L577-3(lines 562 582) no Hoare annotation was computed. [2019-10-15 00:11:26,972 INFO L443 ceAbstractionStarter]: For program point L569(lines 569 570) no Hoare annotation was computed. [2019-10-15 00:11:26,972 INFO L443 ceAbstractionStarter]: For program point L578(line 578) no Hoare annotation was computed. [2019-10-15 00:11:26,972 INFO L443 ceAbstractionStarter]: For program point L578-2(line 578) no Hoare annotation was computed. [2019-10-15 00:11:26,973 INFO L443 ceAbstractionStarter]: For program point L578-3(line 578) no Hoare annotation was computed. [2019-10-15 00:11:26,973 INFO L443 ceAbstractionStarter]: For program point L578-5(line 578) no Hoare annotation was computed. [2019-10-15 00:11:26,973 INFO L443 ceAbstractionStarter]: For program point L578-7(line 578) no Hoare annotation was computed. [2019-10-15 00:11:26,973 INFO L439 ceAbstractionStarter]: At program point L570(lines 564 575) the Hoare annotation is: (and (= 0 main_~l~0.base) (= main_~l~0.offset 0)) [2019-10-15 00:11:26,973 INFO L443 ceAbstractionStarter]: For program point L578-8(lines 578 579) no Hoare annotation was computed. [2019-10-15 00:11:26,973 INFO L443 ceAbstractionStarter]: For program point L578-10(lines 578 579) no Hoare annotation was computed. [2019-10-15 00:11:26,974 INFO L443 ceAbstractionStarter]: For program point L579(line 579) no Hoare annotation was computed. [2019-10-15 00:11:26,974 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 562 582) the Hoare annotation is: true [2019-10-15 00:11:26,974 INFO L443 ceAbstractionStarter]: For program point L567(lines 567 568) no Hoare annotation was computed. [2019-10-15 00:11:26,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:11:26 BoogieIcfgContainer [2019-10-15 00:11:26,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 00:11:27,005 INFO L168 Benchmark]: Toolchain (without parser) took 5009.01 ms. Allocated memory was 147.8 MB in the beginning and 244.3 MB in the end (delta: 96.5 MB). Free memory was 105.0 MB in the beginning and 179.0 MB in the end (delta: -74.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2019-10-15 00:11:27,006 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 147.8 MB. Free memory was 124.2 MB in the beginning and 124.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 00:11:27,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.91 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 104.8 MB in the beginning and 171.3 MB in the end (delta: -66.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-10-15 00:11:27,008 INFO L168 Benchmark]: Boogie Preprocessor took 92.04 ms. Allocated memory is still 204.5 MB. Free memory was 171.3 MB in the beginning and 168.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-10-15 00:11:27,011 INFO L168 Benchmark]: RCFGBuilder took 655.79 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 127.2 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. [2019-10-15 00:11:27,012 INFO L168 Benchmark]: TraceAbstraction took 3491.92 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 127.2 MB in the beginning and 179.0 MB in the end (delta: -51.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-15 00:11:27,018 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 147.8 MB. Free memory was 124.2 MB in the beginning and 124.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 755.91 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 104.8 MB in the beginning and 171.3 MB in the end (delta: -66.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.04 ms. Allocated memory is still 204.5 MB. Free memory was 171.3 MB in the beginning and 168.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 655.79 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 127.2 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3491.92 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 127.2 MB in the beginning and 179.0 MB in the end (delta: -51.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 579]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 564]: Loop Invariant Derived loop invariant: 0 == l && l == 0 - InvariantResult [Line: 577]: Loop Invariant Derived loop invariant: ((0 == l && 0 == l) && 0 == i) && 0 == i - InvariantResult [Line: 564]: Loop Invariant Derived loop invariant: 0 == l && l == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 3.4s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 165 SDtfs, 231 SDslu, 352 SDs, 0 SdLazy, 169 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 55 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 31 HoareAnnotationTreeSize, 7 FomulaSimplifications, 105 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 30548 SizeOfPredicates, 8 NumberOfNonLiveVariables, 118 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 24/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 220, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9243197278911565, AVG_VARS_REMOVED_DURING_WEAKENING: 1.3214285714285714, AVG_WEAKENED_CONJUNCTS: 1.9285714285714286, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...