/usr/bin/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-fb55353 [2019-11-07 02:08:32,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 02:08:32,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 02:08:32,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 02:08:32,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 02:08:32,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 02:08:32,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 02:08:32,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 02:08:32,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 02:08:32,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 02:08:32,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 02:08:32,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 02:08:32,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 02:08:32,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 02:08:32,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 02:08:32,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 02:08:32,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 02:08:32,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 02:08:32,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 02:08:32,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 02:08:32,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 02:08:32,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 02:08:32,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 02:08:32,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 02:08:32,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 02:08:32,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 02:08:32,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 02:08:32,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 02:08:32,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 02:08:32,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 02:08:32,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 02:08:32,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 02:08:32,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 02:08:32,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 02:08:32,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 02:08:32,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 02:08:32,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 02:08:32,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 02:08:32,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 02:08:32,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 02:08:32,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 02:08:32,109 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 [2019-11-07 02:08:32,146 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 02:08:32,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 02:08:32,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 02:08:32,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 02:08:32,151 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 02:08:32,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 02:08:32,152 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 02:08:32,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 02:08:32,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 02:08:32,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 02:08:32,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 02:08:32,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 02:08:32,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 02:08:32,153 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 02:08:32,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 02:08:32,154 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 02:08:32,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 02:08:32,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 02:08:32,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 02:08:32,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 02:08:32,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 02:08:32,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 02:08:32,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 02:08:32,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 02:08:32,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 02:08:32,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 02:08:32,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 02:08:32,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 02:08:32,156 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 [2019-11-07 02:08:32,486 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 02:08:32,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 02:08:32,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 02:08:32,511 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 02:08:32,512 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 02:08:32,512 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i [2019-11-07 02:08:32,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/152d3ce41/a11bfaf8760a4114a92a206c1c65131b/FLAG0d99bde79 [2019-11-07 02:08:33,045 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 02:08:33,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i [2019-11-07 02:08:33,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/152d3ce41/a11bfaf8760a4114a92a206c1c65131b/FLAG0d99bde79 [2019-11-07 02:08:33,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/152d3ce41/a11bfaf8760a4114a92a206c1c65131b [2019-11-07 02:08:33,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 02:08:33,366 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 02:08:33,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 02:08:33,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 02:08:33,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 02:08:33,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:33" (1/1) ... [2019-11-07 02:08:33,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce461f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:33, skipping insertion in model container [2019-11-07 02:08:33,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:33" (1/1) ... [2019-11-07 02:08:33,383 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 02:08:33,435 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 02:08:33,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:08:33,986 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 02:08:34,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:08:34,126 INFO L192 MainTranslator]: Completed translation [2019-11-07 02:08:34,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:34 WrapperNode [2019-11-07 02:08:34,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 02:08:34,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 02:08:34,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 02:08:34,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 02:08:34,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:34" (1/1) ... [2019-11-07 02:08:34,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:34" (1/1) ... [2019-11-07 02:08:34,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:34" (1/1) ... [2019-11-07 02:08:34,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:34" (1/1) ... [2019-11-07 02:08:34,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:34" (1/1) ... [2019-11-07 02:08:34,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:34" (1/1) ... [2019-11-07 02:08:34,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:34" (1/1) ... [2019-11-07 02:08:34,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 02:08:34,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 02:08:34,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 02:08:34,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 02:08:34,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:34" (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 [2019-11-07 02:08:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 02:08:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 02:08:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 02:08:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 02:08:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 02:08:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 02:08:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 02:08:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 02:08:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 02:08:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 02:08:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 02:08:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 02:08:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 02:08:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 02:08:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 02:08:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 02:08:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 02:08:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 02:08:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 02:08:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 02:08:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 02:08:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 02:08:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 02:08:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 02:08:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 02:08:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 02:08:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 02:08:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 02:08:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 02:08:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 02:08:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 02:08:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 02:08:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 02:08:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 02:08:34,295 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 02:08:34,295 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 02:08:34,295 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 02:08:34,295 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 02:08:34,295 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 02:08:34,295 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 02:08:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 02:08:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 02:08:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 02:08:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 02:08:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 02:08:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 02:08:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 02:08:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 02:08:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 02:08:34,297 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 02:08:34,297 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 02:08:34,297 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 02:08:34,297 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 02:08:34,297 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 02:08:34,297 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 02:08:34,297 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 02:08:34,297 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 02:08:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 02:08:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 02:08:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 02:08:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 02:08:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 02:08:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 02:08:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 02:08:34,299 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 02:08:34,299 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 02:08:34,299 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 02:08:34,299 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 02:08:34,299 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 02:08:34,300 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 02:08:34,300 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 02:08:34,300 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 02:08:34,300 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 02:08:34,300 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 02:08:34,300 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 02:08:34,300 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 02:08:34,301 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 02:08:34,301 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 02:08:34,301 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 02:08:34,301 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 02:08:34,301 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 02:08:34,301 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 02:08:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 02:08:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 02:08:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 02:08:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 02:08:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 02:08:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 02:08:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 02:08:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 02:08:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 02:08:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 02:08:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 02:08:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 02:08:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 02:08:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 02:08:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 02:08:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 02:08:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 02:08:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 02:08:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 02:08:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 02:08:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 02:08:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 02:08:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 02:08:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 02:08:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 02:08:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 02:08:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 02:08:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 02:08:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 02:08:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 02:08:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 02:08:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 02:08:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 02:08:34,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 02:08:34,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 02:08:35,251 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 02:08:35,251 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-07 02:08:35,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:35 BoogieIcfgContainer [2019-11-07 02:08:35,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 02:08:35,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 02:08:35,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 02:08:35,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 02:08:35,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:08:33" (1/3) ... [2019-11-07 02:08:35,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec49a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:35, skipping insertion in model container [2019-11-07 02:08:35,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:34" (2/3) ... [2019-11-07 02:08:35,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec49a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:35, skipping insertion in model container [2019-11-07 02:08:35,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:35" (3/3) ... [2019-11-07 02:08:35,261 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-1.i [2019-11-07 02:08:35,272 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 02:08:35,280 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-07 02:08:35,292 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-07 02:08:35,318 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 02:08:35,318 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 02:08:35,319 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 02:08:35,319 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 02:08:35,319 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 02:08:35,319 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 02:08:35,320 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 02:08:35,320 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 02:08:35,335 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2019-11-07 02:08:35,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-07 02:08:35,341 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:35,342 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:35,344 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:35,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:35,349 INFO L82 PathProgramCache]: Analyzing trace with hash 299738079, now seen corresponding path program 1 times [2019-11-07 02:08:35,359 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:35,359 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173674579] [2019-11-07 02:08:35,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:35,508 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173674579] [2019-11-07 02:08:35,509 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:08:35,509 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 02:08:35,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414295634] [2019-11-07 02:08:35,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 02:08:35,516 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:35,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 02:08:35,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 02:08:35,534 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2019-11-07 02:08:35,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:08:35,561 INFO L93 Difference]: Finished difference Result 89 states and 139 transitions. [2019-11-07 02:08:35,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 02:08:35,563 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-07 02:08:35,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:08:35,573 INFO L225 Difference]: With dead ends: 89 [2019-11-07 02:08:35,573 INFO L226 Difference]: Without dead ends: 43 [2019-11-07 02:08:35,577 INFO L630 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 [2019-11-07 02:08:35,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-07 02:08:35,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-11-07 02:08:35,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-07 02:08:35,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2019-11-07 02:08:35,657 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 9 [2019-11-07 02:08:35,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:08:35,658 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2019-11-07 02:08:35,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 02:08:35,658 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2019-11-07 02:08:35,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 02:08:35,659 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:35,660 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:35,660 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:35,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:35,661 INFO L82 PathProgramCache]: Analyzing trace with hash 644598331, now seen corresponding path program 1 times [2019-11-07 02:08:35,661 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:35,661 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281554410] [2019-11-07 02:08:35,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:35,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:35,968 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281554410] [2019-11-07 02:08:35,968 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:08:35,969 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 02:08:35,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767336675] [2019-11-07 02:08:35,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:08:35,974 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:35,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:08:35,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:08:35,975 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 4 states. [2019-11-07 02:08:36,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:08:36,130 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2019-11-07 02:08:36,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 02:08:36,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-07 02:08:36,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:08:36,131 INFO L225 Difference]: With dead ends: 43 [2019-11-07 02:08:36,131 INFO L226 Difference]: Without dead ends: 41 [2019-11-07 02:08:36,132 INFO L630 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 [2019-11-07 02:08:36,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-07 02:08:36,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-11-07 02:08:36,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-07 02:08:36,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2019-11-07 02:08:36,139 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 10 [2019-11-07 02:08:36,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:08:36,139 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2019-11-07 02:08:36,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:08:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2019-11-07 02:08:36,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 02:08:36,140 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:36,140 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:36,141 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:36,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:36,141 INFO L82 PathProgramCache]: Analyzing trace with hash 639051341, now seen corresponding path program 1 times [2019-11-07 02:08:36,141 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:36,142 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545091344] [2019-11-07 02:08:36,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:36,188 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545091344] [2019-11-07 02:08:36,188 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:08:36,188 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 02:08:36,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63787054] [2019-11-07 02:08:36,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:08:36,191 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:36,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:08:36,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:08:36,191 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 4 states. [2019-11-07 02:08:36,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:08:36,426 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2019-11-07 02:08:36,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 02:08:36,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-07 02:08:36,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:08:36,429 INFO L225 Difference]: With dead ends: 44 [2019-11-07 02:08:36,429 INFO L226 Difference]: Without dead ends: 40 [2019-11-07 02:08:36,431 INFO L630 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 [2019-11-07 02:08:36,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-07 02:08:36,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2019-11-07 02:08:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-07 02:08:36,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-11-07 02:08:36,440 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 10 [2019-11-07 02:08:36,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:08:36,441 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2019-11-07 02:08:36,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:08:36,441 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2019-11-07 02:08:36,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-07 02:08:36,442 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:36,442 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:36,444 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:36,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:36,444 INFO L82 PathProgramCache]: Analyzing trace with hash 434039850, now seen corresponding path program 1 times [2019-11-07 02:08:36,445 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:36,445 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145443597] [2019-11-07 02:08:36,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:36,587 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145443597] [2019-11-07 02:08:36,588 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:08:36,588 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 02:08:36,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801403733] [2019-11-07 02:08:36,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:08:36,590 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:36,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:08:36,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:08:36,591 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2019-11-07 02:08:36,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:08:36,923 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2019-11-07 02:08:36,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 02:08:36,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-07 02:08:36,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:08:36,924 INFO L225 Difference]: With dead ends: 37 [2019-11-07 02:08:36,924 INFO L226 Difference]: Without dead ends: 35 [2019-11-07 02:08:36,925 INFO L630 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 [2019-11-07 02:08:36,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-07 02:08:36,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-11-07 02:08:36,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-07 02:08:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-11-07 02:08:36,930 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2019-11-07 02:08:36,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:08:36,930 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2019-11-07 02:08:36,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:08:36,930 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2019-11-07 02:08:36,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-07 02:08:36,931 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:36,931 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:36,931 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:36,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:36,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1607525391, now seen corresponding path program 1 times [2019-11-07 02:08:36,931 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:36,932 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879173394] [2019-11-07 02:08:36,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:37,030 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879173394] [2019-11-07 02:08:37,030 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:08:37,030 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 02:08:37,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021903799] [2019-11-07 02:08:37,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 02:08:37,035 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:37,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 02:08:37,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:08:37,036 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2019-11-07 02:08:37,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:08:37,520 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2019-11-07 02:08:37,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 02:08:37,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-07 02:08:37,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:08:37,523 INFO L225 Difference]: With dead ends: 60 [2019-11-07 02:08:37,523 INFO L226 Difference]: Without dead ends: 58 [2019-11-07 02:08:37,523 INFO L630 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 [2019-11-07 02:08:37,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-07 02:08:37,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 42. [2019-11-07 02:08:37,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-07 02:08:37,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-11-07 02:08:37,530 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 13 [2019-11-07 02:08:37,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:08:37,531 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2019-11-07 02:08:37,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 02:08:37,531 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2019-11-07 02:08:37,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-07 02:08:37,532 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:37,532 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:37,532 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:37,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:37,533 INFO L82 PathProgramCache]: Analyzing trace with hash -2116307816, now seen corresponding path program 1 times [2019-11-07 02:08:37,533 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:37,533 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838411144] [2019-11-07 02:08:37,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:37,611 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838411144] [2019-11-07 02:08:37,611 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:08:37,611 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 02:08:37,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139310970] [2019-11-07 02:08:37,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 02:08:37,612 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:37,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 02:08:37,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:08:37,613 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 5 states. [2019-11-07 02:08:37,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:08:37,976 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2019-11-07 02:08:37,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 02:08:37,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-07 02:08:37,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:08:37,978 INFO L225 Difference]: With dead ends: 57 [2019-11-07 02:08:37,978 INFO L226 Difference]: Without dead ends: 45 [2019-11-07 02:08:37,979 INFO L630 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 [2019-11-07 02:08:37,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-07 02:08:37,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2019-11-07 02:08:37,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-07 02:08:37,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2019-11-07 02:08:37,984 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 17 [2019-11-07 02:08:37,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:08:37,985 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2019-11-07 02:08:37,985 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 02:08:37,985 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2019-11-07 02:08:37,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-07 02:08:37,986 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:37,986 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:37,986 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:37,987 INFO L82 PathProgramCache]: Analyzing trace with hash 17922409, now seen corresponding path program 1 times [2019-11-07 02:08:37,987 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:37,987 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419097981] [2019-11-07 02:08:37,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:38,043 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419097981] [2019-11-07 02:08:38,043 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618543144] [2019-11-07 02:08:38,043 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 [2019-11-07 02:08:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:38,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-07 02:08:38,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:08:38,292 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:08:38,294 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:08:38,295 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:08:38,312 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 [2019-11-07 02:08:38,315 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:38,334 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:38,341 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:08:38,345 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:08:38,346 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:08:38,349 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 [2019-11-07 02:08:38,350 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:38,362 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:38,363 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 02:08:38,363 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:58, output treesize:36 [2019-11-07 02:08:38,415 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 [2019-11-07 02:08:38,416 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:38,424 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:38,429 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:38,430 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 [2019-11-07 02:08:38,430 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:38,435 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:38,435 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 02:08:38,436 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:7 [2019-11-07 02:08:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:38,439 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:08:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:38,462 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1123879752] [2019-11-07 02:08:38,504 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-11-07 02:08:38,504 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 02:08:38,510 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 02:08:38,517 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 02:08:38,518 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 02:08:38,588 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-11-07 02:08:38,811 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 02:08:38,813 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 02:08:39,573 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 02:08:39,573 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5, 5, 5] total 16 [2019-11-07 02:08:39,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051443292] [2019-11-07 02:08:39,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 02:08:39,575 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:39,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 02:08:39,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2019-11-07 02:08:39,576 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 11 states. [2019-11-07 02:08:40,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:08:40,622 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2019-11-07 02:08:40,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 02:08:40,623 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2019-11-07 02:08:40,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:08:40,624 INFO L225 Difference]: With dead ends: 62 [2019-11-07 02:08:40,624 INFO L226 Difference]: Without dead ends: 39 [2019-11-07 02:08:40,625 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2019-11-07 02:08:40,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-07 02:08:40,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-11-07 02:08:40,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-07 02:08:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2019-11-07 02:08:40,633 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 20 [2019-11-07 02:08:40,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:08:40,633 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2019-11-07 02:08:40,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 02:08:40,633 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2019-11-07 02:08:40,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-07 02:08:40,634 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:40,634 INFO L410 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] [2019-11-07 02:08:40,838 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:08:40,846 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:40,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:40,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1465232090, now seen corresponding path program 1 times [2019-11-07 02:08:40,847 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:40,847 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593583386] [2019-11-07 02:08:40,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:41,232 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593583386] [2019-11-07 02:08:41,232 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295512298] [2019-11-07 02:08:41,232 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 [2019-11-07 02:08:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:41,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-07 02:08:41,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:09:14,803 WARN L191 SmtUtils]: Spent 31.57 s on a formula simplification that was a NOOP. DAG size: 209