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-queue-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:58:46,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:58:46,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:58:46,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:58:46,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:58:46,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:58:46,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:58:46,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:58:46,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:58:46,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:58:46,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:58:46,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:58:46,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:58:46,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:58:46,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:58:46,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:58:46,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:58:46,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:58:46,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:58:46,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:58:46,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:58:46,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:58:46,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:58:46,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:58:46,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:58:46,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:58:46,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:58:46,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:58:46,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:58:46,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:58:46,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:58:46,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:58:46,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:58:46,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:58:46,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:58:46,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:58:46,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:58:46,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:58:46,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:58:46,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:58:46,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:58:46,232 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:58:46,260 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:58:46,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:58:46,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:58:46,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:58:46,262 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:58:46,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:58:46,262 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:58:46,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:58:46,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:58:46,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:58:46,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:58:46,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:58:46,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:58:46,264 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:58:46,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:58:46,264 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:58:46,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:58:46,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:58:46,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:58:46,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:58:46,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:58:46,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:58:46,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:58:46,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:58:46,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:58:46,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:58:46,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:58:46,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:58:46,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 01:58:46,534 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:58:46,546 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:58:46,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:58:46,551 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:58:46,551 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:58:46,552 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-queue-2.i [2019-10-15 01:58:46,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5679c741d/9f5fefc9f88d49be8d1d467c954ae70e/FLAGcb7d8b9d8 [2019-10-15 01:58:47,139 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:58:47,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-queue-2.i [2019-10-15 01:58:47,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5679c741d/9f5fefc9f88d49be8d1d467c954ae70e/FLAGcb7d8b9d8 [2019-10-15 01:58:47,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5679c741d/9f5fefc9f88d49be8d1d467c954ae70e [2019-10-15 01:58:47,379 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:58:47,380 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:58:47,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:58:47,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:58:47,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:58:47,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:58:47" (1/1) ... [2019-10-15 01:58:47,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a6c11a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:47, skipping insertion in model container [2019-10-15 01:58:47,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:58:47" (1/1) ... [2019-10-15 01:58:47,396 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:58:47,433 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:58:47,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:58:47,871 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:58:47,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:58:47,980 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:58:47,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:47 WrapperNode [2019-10-15 01:58:47,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:58:47,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:58:47,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:58:47,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:58:47,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:47" (1/1) ... [2019-10-15 01:58:47,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:47" (1/1) ... [2019-10-15 01:58:48,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:47" (1/1) ... [2019-10-15 01:58:48,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:47" (1/1) ... [2019-10-15 01:58:48,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:47" (1/1) ... [2019-10-15 01:58:48,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:47" (1/1) ... [2019-10-15 01:58:48,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:47" (1/1) ... [2019-10-15 01:58:48,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:58:48,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:58:48,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:58:48,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:58:48,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:58:48,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:58:48,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:58:48,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:58:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 01:58:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 01:58:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 01:58:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 01:58:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 01:58:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 01:58:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 01:58:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 01:58:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 01:58:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 01:58:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 01:58:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 01:58:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 01:58:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 01:58:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 01:58:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 01:58:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 01:58:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 01:58:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 01:58:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 01:58:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 01:58:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 01:58:48,145 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 01:58:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 01:58:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 01:58:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 01:58:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 01:58:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 01:58:48,147 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 01:58:48,147 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 01:58:48,147 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 01:58:48,147 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 01:58:48,147 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 01:58:48,147 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 01:58:48,147 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 01:58:48,148 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 01:58:48,148 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 01:58:48,148 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 01:58:48,148 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 01:58:48,148 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 01:58:48,148 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 01:58:48,148 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 01:58:48,149 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 01:58:48,149 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 01:58:48,149 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 01:58:48,149 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 01:58:48,149 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 01:58:48,149 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 01:58:48,150 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 01:58:48,150 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 01:58:48,150 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:58:48,150 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 01:58:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 01:58:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:58:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 01:58:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 01:58:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 01:58:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 01:58:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 01:58:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 01:58:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 01:58:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 01:58:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 01:58:48,153 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:58:48,153 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 01:58:48,154 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 01:58:48,154 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 01:58:48,154 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 01:58:48,154 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 01:58:48,154 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 01:58:48,155 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 01:58:48,155 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 01:58:48,155 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 01:58:48,156 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 01:58:48,156 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 01:58:48,156 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 01:58:48,156 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 01:58:48,156 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 01:58:48,157 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 01:58:48,157 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 01:58:48,157 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 01:58:48,158 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 01:58:48,158 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 01:58:48,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 01:58:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 01:58:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 01:58:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 01:58:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 01:58:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 01:58:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 01:58:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 01:58:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 01:58:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 01:58:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 01:58:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 01:58:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 01:58:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 01:58:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 01:58:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 01:58:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 01:58:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 01:58:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 01:58:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 01:58:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:58:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:58:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:58:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:58:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:58:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:58:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:58:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:58:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:58:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:58:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:58:48,977 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:58:48,977 INFO L284 CfgBuilder]: Removed 31 assume(true) statements. [2019-10-15 01:58:48,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:58:48 BoogieIcfgContainer [2019-10-15 01:58:48,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:58:48,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:58:48,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:58:48,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:58:48,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:58:47" (1/3) ... [2019-10-15 01:58:48,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30130174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:58:48, skipping insertion in model container [2019-10-15 01:58:48,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:58:47" (2/3) ... [2019-10-15 01:58:48,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30130174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:58:48, skipping insertion in model container [2019-10-15 01:58:48,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:58:48" (3/3) ... [2019-10-15 01:58:48,988 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-queue-2.i [2019-10-15 01:58:48,999 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:58:49,008 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2019-10-15 01:58:49,019 INFO L249 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2019-10-15 01:58:49,045 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:58:49,046 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:58:49,046 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:58:49,046 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:58:49,047 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:58:49,047 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:58:49,047 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:58:49,047 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:58:49,069 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2019-10-15 01:58:49,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-15 01:58:49,076 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:58:49,077 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:58:49,079 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:58:49,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:58:49,086 INFO L82 PathProgramCache]: Analyzing trace with hash -720600283, now seen corresponding path program 1 times [2019-10-15 01:58:49,095 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:58:49,096 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791456838] [2019-10-15 01:58:49,096 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:49,096 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:49,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:58:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:58:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:58:49,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791456838] [2019-10-15 01:58:49,268 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:58:49,269 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:58:49,269 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953275502] [2019-10-15 01:58:49,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:58:49,274 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:58:49,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:58:49,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:58:49,291 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 2 states. [2019-10-15 01:58:49,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:58:49,319 INFO L93 Difference]: Finished difference Result 159 states and 257 transitions. [2019-10-15 01:58:49,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:58:49,321 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-10-15 01:58:49,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:58:49,332 INFO L225 Difference]: With dead ends: 159 [2019-10-15 01:58:49,332 INFO L226 Difference]: Without dead ends: 78 [2019-10-15 01:58:49,336 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:58:49,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-10-15 01:58:49,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2019-10-15 01:58:49,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-15 01:58:49,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2019-10-15 01:58:49,380 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 8 [2019-10-15 01:58:49,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:58:49,380 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2019-10-15 01:58:49,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:58:49,381 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2019-10-15 01:58:49,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-15 01:58:49,381 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:58:49,381 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:58:49,382 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:58:49,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:58:49,383 INFO L82 PathProgramCache]: Analyzing trace with hash -865194756, now seen corresponding path program 1 times [2019-10-15 01:58:49,383 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:58:49,383 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799275740] [2019-10-15 01:58:49,383 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:49,383 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:49,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:58:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:58:49,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:58:49,503 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799275740] [2019-10-15 01:58:49,504 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:58:49,504 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:58:49,504 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633396409] [2019-10-15 01:58:49,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:58:49,506 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:58:49,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:58:49,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:58:49,506 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 3 states. [2019-10-15 01:58:49,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:58:49,581 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2019-10-15 01:58:49,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:58:49,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-10-15 01:58:49,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:58:49,583 INFO L225 Difference]: With dead ends: 78 [2019-10-15 01:58:49,583 INFO L226 Difference]: Without dead ends: 68 [2019-10-15 01:58:49,584 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:58:49,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-10-15 01:58:49,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-10-15 01:58:49,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-10-15 01:58:49,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2019-10-15 01:58:49,603 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 9 [2019-10-15 01:58:49,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:58:49,603 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2019-10-15 01:58:49,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:58:49,603 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2019-10-15 01:58:49,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:58:49,604 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:58:49,604 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:58:49,605 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:58:49,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:58:49,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1771622400, now seen corresponding path program 1 times [2019-10-15 01:58:49,605 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:58:49,605 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936592232] [2019-10-15 01:58:49,606 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:49,606 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:49,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:58:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:58:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:58:49,708 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936592232] [2019-10-15 01:58:49,708 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:58:49,708 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:58:49,709 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457776875] [2019-10-15 01:58:49,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:58:49,709 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:58:49,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:58:49,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:58:49,710 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 4 states. [2019-10-15 01:58:49,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:58:49,769 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2019-10-15 01:58:49,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:58:49,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-15 01:58:49,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:58:49,772 INFO L225 Difference]: With dead ends: 68 [2019-10-15 01:58:49,772 INFO L226 Difference]: Without dead ends: 66 [2019-10-15 01:58:49,772 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:58:49,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-10-15 01:58:49,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2019-10-15 01:58:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-10-15 01:58:49,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2019-10-15 01:58:49,780 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 11 [2019-10-15 01:58:49,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:58:49,780 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2019-10-15 01:58:49,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:58:49,780 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2019-10-15 01:58:49,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-15 01:58:49,781 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:58:49,781 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:58:49,782 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:58:49,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:58:49,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1429193867, now seen corresponding path program 1 times [2019-10-15 01:58:49,783 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:58:49,783 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358186617] [2019-10-15 01:58:49,783 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:49,783 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:49,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:58:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:58:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:58:49,829 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358186617] [2019-10-15 01:58:49,829 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:58:49,829 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:58:49,831 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649958893] [2019-10-15 01:58:49,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:58:49,832 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:58:49,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:58:49,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:58:49,833 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 3 states. [2019-10-15 01:58:49,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:58:49,915 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2019-10-15 01:58:49,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:58:49,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-15 01:58:49,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:58:49,917 INFO L225 Difference]: With dead ends: 134 [2019-10-15 01:58:49,917 INFO L226 Difference]: Without dead ends: 82 [2019-10-15 01:58:49,918 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:58:49,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-10-15 01:58:49,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 73. [2019-10-15 01:58:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-10-15 01:58:49,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2019-10-15 01:58:49,926 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 15 [2019-10-15 01:58:49,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:58:49,927 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2019-10-15 01:58:49,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:58:49,927 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2019-10-15 01:58:49,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-15 01:58:49,928 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:58:49,928 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:58:49,929 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:58:49,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:58:49,929 INFO L82 PathProgramCache]: Analyzing trace with hash -529264867, now seen corresponding path program 1 times [2019-10-15 01:58:49,929 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:58:49,930 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866252665] [2019-10-15 01:58:49,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:49,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:49,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:58:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:58:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:58:49,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866252665] [2019-10-15 01:58:49,972 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:58:49,973 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:58:49,973 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443871615] [2019-10-15 01:58:49,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:58:49,974 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:58:49,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:58:49,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:58:49,975 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 4 states. [2019-10-15 01:58:50,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:58:50,091 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2019-10-15 01:58:50,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:58:50,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-10-15 01:58:50,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:58:50,095 INFO L225 Difference]: With dead ends: 82 [2019-10-15 01:58:50,096 INFO L226 Difference]: Without dead ends: 68 [2019-10-15 01:58:50,096 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:58:50,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-10-15 01:58:50,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-10-15 01:58:50,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-10-15 01:58:50,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2019-10-15 01:58:50,105 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 18 [2019-10-15 01:58:50,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:58:50,106 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2019-10-15 01:58:50,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:58:50,108 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2019-10-15 01:58:50,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-15 01:58:50,109 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:58:50,109 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:58:50,110 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:58:50,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:58:50,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2109931812, now seen corresponding path program 1 times [2019-10-15 01:58:50,110 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:58:50,111 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910850561] [2019-10-15 01:58:50,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:50,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:58:50,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:58:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:58:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:58:50,280 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910850561] [2019-10-15 01:58:50,281 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964617298] [2019-10-15 01:58:50,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:58:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:58:50,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-15 01:58:50,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:58:50,466 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-10-15 01:58:50,467 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:58:50,482 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:58:50,483 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:58:50,483 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-10-15 01:58:50,528 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:58:50,529 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 15 [2019-10-15 01:58:50,530 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:58:50,561 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:58:50,565 INFO L392 ElimStorePlain]: Different costs {0=[|#memory_$Pointer$.offset|, |v_#memory_$Pointer$.offset_41|], 10=[|v_#memory_$Pointer$.base_41|]} [2019-10-15 01:58:50,573 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:58:50,588 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:58:50,588 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.offset_41| vanished before elimination [2019-10-15 01:58:50,594 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:58:50,645 INFO L341 Elim1Store]: treesize reduction 73, result has 29.1 percent of original size [2019-10-15 01:58:50,645 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 37 [2019-10-15 01:58:50,646 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 01:58:50,667 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:58:50,669 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:58:50,674 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-15 01:58:50,674 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:343, output treesize:54 [2019-10-15 01:58:50,675 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:58:50,720 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:58:52,824 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:58:52,824 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 30 [2019-10-15 01:58:52,825 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:58:52,837 INFO L567 ElimStorePlain]: treesize reduction 12, result has 42.9 percent of original size [2019-10-15 01:58:52,838 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:58:52,839 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:4 [2019-10-15 01:58:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:58:52,849 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:58:52,862 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:58:52,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:58:52,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:58:52,918 INFO L392 ElimStorePlain]: Different costs {0=[v_prenex_10, |#memory_$Pointer$.offset|, v_prenex_11, v_prenex_18, v_prenex_17, |v_#memory_$Pointer$.offset_42|], 2=[v_prenex_13, |v_#memory_$Pointer$.base_42|, v_prenex_6], 7=[v_prenex_4], 10=[v_prenex_9, |#memory_$Pointer$.base|, v_prenex_16]} [2019-10-15 01:58:52,939 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:58:52,944 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:58:53,102 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2019-10-15 01:58:53,103 INFO L341 Elim1Store]: treesize reduction 344, result has 32.3 percent of original size [2019-10-15 01:58:53,105 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 358 treesize of output 356 [2019-10-15 01:58:53,106 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:12,535 WARN L191 SmtUtils]: Spent 19.43 s on a formula simplification. DAG size of input: 203 DAG size of output: 203 [2019-10-15 01:59:12,535 INFO L567 ElimStorePlain]: treesize reduction 9, result has 99.3 percent of original size [2019-10-15 01:59:12,564 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:12,573 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:59:12,728 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2019-10-15 01:59:12,728 INFO L341 Elim1Store]: treesize reduction 344, result has 32.3 percent of original size [2019-10-15 01:59:12,729 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 352 treesize of output 350 [2019-10-15 01:59:12,731 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:21,878 WARN L191 SmtUtils]: Spent 9.15 s on a formula simplification that was a NOOP. DAG size: 219 [2019-10-15 01:59:21,879 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:22,095 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:22,329 INFO L235 Elim1Store]: Index analysis took 292 ms [2019-10-15 01:59:22,651 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:22,652 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 350 treesize of output 378 [2019-10-15 01:59:22,654 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:22,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:22,656 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-15 01:59:22,656 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:22,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:22,676 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:22,677 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:22,679 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:35,019 WARN L191 SmtUtils]: Spent 12.34 s on a formula simplification. DAG size of input: 221 DAG size of output: 187 [2019-10-15 01:59:35,020 INFO L567 ElimStorePlain]: treesize reduction 371, result has 73.7 percent of original size [2019-10-15 01:59:35,028 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:37,461 WARN L191 SmtUtils]: Spent 2.43 s on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:59:37,461 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:37,462 INFO L464 ElimStorePlain]: Eliminatee v_prenex_17 vanished before elimination [2019-10-15 01:59:37,481 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:37,543 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:37,544 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 350 treesize of output 378 [2019-10-15 01:59:37,545 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:37,546 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:37,546 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:59:37,547 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-15 01:59:37,548 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:59:37,549 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:37,550 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:59:37,550 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:37,553 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.