/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-queue-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 02:08:13,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 02:08:13,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 02:08:13,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 02:08:13,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 02:08:13,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 02:08:13,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 02:08:13,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 02:08:13,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 02:08:13,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 02:08:13,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 02:08:13,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 02:08:13,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 02:08:13,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 02:08:13,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 02:08:13,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 02:08:13,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 02:08:13,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 02:08:13,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 02:08:13,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 02:08:13,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 02:08:13,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 02:08:13,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 02:08:13,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 02:08:13,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 02:08:13,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 02:08:13,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 02:08:13,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 02:08:13,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 02:08:13,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 02:08:13,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 02:08:13,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 02:08:13,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 02:08:13,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 02:08:13,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 02:08:13,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 02:08:13,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 02:08:13,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 02:08:13,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 02:08:13,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 02:08:13,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 02:08:13,350 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 02:08:13,364 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 02:08:13,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 02:08:13,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 02:08:13,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 02:08:13,366 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 02:08:13,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 02:08:13,366 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 02:08:13,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 02:08:13,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 02:08:13,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 02:08:13,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 02:08:13,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 02:08:13,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 02:08:13,368 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 02:08:13,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 02:08:13,368 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 02:08:13,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 02:08:13,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 02:08:13,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 02:08:13,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 02:08:13,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 02:08:13,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 02:08:13,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 02:08:13,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 02:08:13,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 02:08:13,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 02:08:13,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 02:08:13,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 02:08:13,371 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 02:08:13,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 02:08:13,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 02:08:13,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 02:08:13,659 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 02:08:13,660 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 02:08:13,660 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-queue-2.i [2019-11-07 02:08:13,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5ece59ee/444ca6d016e7417fa1d1b5463409d9fc/FLAGb49971226 [2019-11-07 02:08:14,184 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 02:08:14,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-queue-2.i [2019-11-07 02:08:14,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5ece59ee/444ca6d016e7417fa1d1b5463409d9fc/FLAGb49971226 [2019-11-07 02:08:14,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5ece59ee/444ca6d016e7417fa1d1b5463409d9fc [2019-11-07 02:08:14,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 02:08:14,544 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 02:08:14,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 02:08:14,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 02:08:14,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 02:08:14,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:14" (1/1) ... [2019-11-07 02:08:14,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58459d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:14, skipping insertion in model container [2019-11-07 02:08:14,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:14" (1/1) ... [2019-11-07 02:08:14,561 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 02:08:14,624 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 02:08:15,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:08:15,096 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 02:08:15,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:08:15,215 INFO L192 MainTranslator]: Completed translation [2019-11-07 02:08:15,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:15 WrapperNode [2019-11-07 02:08:15,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 02:08:15,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 02:08:15,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 02:08:15,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 02:08:15,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:15" (1/1) ... [2019-11-07 02:08:15,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:15" (1/1) ... [2019-11-07 02:08:15,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:15" (1/1) ... [2019-11-07 02:08:15,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:15" (1/1) ... [2019-11-07 02:08:15,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:15" (1/1) ... [2019-11-07 02:08:15,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:15" (1/1) ... [2019-11-07 02:08:15,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:15" (1/1) ... [2019-11-07 02:08:15,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 02:08:15,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 02:08:15,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 02:08:15,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 02:08:15,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:15" (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 02:08:15,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 02:08:15,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 02:08:15,358 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 02:08:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 02:08:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 02:08:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 02:08:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 02:08:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 02:08:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 02:08:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 02:08:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 02:08:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 02:08:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 02:08:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 02:08:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 02:08:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 02:08:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 02:08:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 02:08:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 02:08:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 02:08:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 02:08:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 02:08:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 02:08:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 02:08:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 02:08:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 02:08:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 02:08:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 02:08:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 02:08:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 02:08:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 02:08:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 02:08:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 02:08:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 02:08:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 02:08:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 02:08:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 02:08:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 02:08:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 02:08:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 02:08:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 02:08:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 02:08:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 02:08:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 02:08:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 02:08:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 02:08:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 02:08:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 02:08:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 02:08:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 02:08:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 02:08:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 02:08:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 02:08:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 02:08:15,367 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 02:08:15,367 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 02:08:15,367 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 02:08:15,367 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 02:08:15,367 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 02:08:15,367 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 02:08:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 02:08:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 02:08:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 02:08:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 02:08:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 02:08:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 02:08:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 02:08:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 02:08:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 02:08:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 02:08:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 02:08:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 02:08:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 02:08:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 02:08:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 02:08:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 02:08:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 02:08:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 02:08:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 02:08:15,371 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 02:08:15,371 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 02:08:15,371 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 02:08:15,371 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 02:08:15,371 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 02:08:15,371 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 02:08:15,371 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 02:08:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 02:08:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 02:08:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 02:08:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 02:08:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 02:08:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 02:08:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 02:08:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 02:08:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 02:08:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 02:08:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 02:08:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 02:08:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 02:08:15,374 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 02:08:15,374 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 02:08:15,374 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 02:08:15,374 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 02:08:15,374 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 02:08:15,374 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 02:08:15,375 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 02:08:15,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 02:08:15,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 02:08:15,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 02:08:15,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 02:08:15,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 02:08:15,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 02:08:15,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 02:08:15,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 02:08:15,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 02:08:15,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 02:08:15,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 02:08:16,203 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 02:08:16,204 INFO L284 CfgBuilder]: Removed 31 assume(true) statements. [2019-11-07 02:08:16,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:16 BoogieIcfgContainer [2019-11-07 02:08:16,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 02:08:16,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 02:08:16,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 02:08:16,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 02:08:16,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:08:14" (1/3) ... [2019-11-07 02:08:16,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70839b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:16, skipping insertion in model container [2019-11-07 02:08:16,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:15" (2/3) ... [2019-11-07 02:08:16,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70839b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:16, skipping insertion in model container [2019-11-07 02:08:16,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:16" (3/3) ... [2019-11-07 02:08:16,214 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-queue-2.i [2019-11-07 02:08:16,224 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 02:08:16,233 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2019-11-07 02:08:16,245 INFO L249 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2019-11-07 02:08:16,271 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 02:08:16,271 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 02:08:16,272 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 02:08:16,272 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 02:08:16,273 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 02:08:16,273 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 02:08:16,273 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 02:08:16,274 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 02:08:16,295 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2019-11-07 02:08:16,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-07 02:08:16,302 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:16,303 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:16,305 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:16,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:16,312 INFO L82 PathProgramCache]: Analyzing trace with hash -720600283, now seen corresponding path program 1 times [2019-11-07 02:08:16,322 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:16,322 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622984476] [2019-11-07 02:08:16,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:16,487 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 02:08:16,488 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622984476] [2019-11-07 02:08:16,488 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:08:16,489 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 02:08:16,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896075254] [2019-11-07 02:08:16,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 02:08:16,495 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:16,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 02:08:16,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 02:08:16,513 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 2 states. [2019-11-07 02:08:16,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:08:16,546 INFO L93 Difference]: Finished difference Result 159 states and 257 transitions. [2019-11-07 02:08:16,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 02:08:16,547 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-07 02:08:16,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:08:16,558 INFO L225 Difference]: With dead ends: 159 [2019-11-07 02:08:16,558 INFO L226 Difference]: Without dead ends: 78 [2019-11-07 02:08:16,562 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 02:08:16,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-07 02:08:16,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2019-11-07 02:08:16,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-11-07 02:08:16,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2019-11-07 02:08:16,604 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 8 [2019-11-07 02:08:16,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:08:16,604 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2019-11-07 02:08:16,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 02:08:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2019-11-07 02:08:16,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-07 02:08:16,605 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:16,605 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:16,606 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:16,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:16,606 INFO L82 PathProgramCache]: Analyzing trace with hash -865194756, now seen corresponding path program 1 times [2019-11-07 02:08:16,606 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:16,607 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162236992] [2019-11-07 02:08:16,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:16,720 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 02:08:16,720 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162236992] [2019-11-07 02:08:16,720 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:08:16,721 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:08:16,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206428590] [2019-11-07 02:08:16,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:08:16,723 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:16,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:08:16,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:08:16,723 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 3 states. [2019-11-07 02:08:16,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:08:16,789 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2019-11-07 02:08:16,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:08:16,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-07 02:08:16,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:08:16,790 INFO L225 Difference]: With dead ends: 78 [2019-11-07 02:08:16,791 INFO L226 Difference]: Without dead ends: 68 [2019-11-07 02:08:16,792 INFO L630 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 [2019-11-07 02:08:16,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-07 02:08:16,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-11-07 02:08:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-07 02:08:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2019-11-07 02:08:16,801 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 9 [2019-11-07 02:08:16,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:08:16,801 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2019-11-07 02:08:16,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:08:16,801 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2019-11-07 02:08:16,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 02:08:16,802 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:16,802 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:16,803 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:16,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:16,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1771622400, now seen corresponding path program 1 times [2019-11-07 02:08:16,803 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:16,804 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392618969] [2019-11-07 02:08:16,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:16,957 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 02:08:16,958 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392618969] [2019-11-07 02:08:16,958 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:08:16,958 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 02:08:16,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761256580] [2019-11-07 02:08:16,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:08:16,959 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:16,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:08:16,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:08:16,960 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 4 states. [2019-11-07 02:08:17,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:08:17,011 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2019-11-07 02:08:17,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:08:17,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-07 02:08:17,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:08:17,012 INFO L225 Difference]: With dead ends: 68 [2019-11-07 02:08:17,013 INFO L226 Difference]: Without dead ends: 66 [2019-11-07 02:08:17,013 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 02:08:17,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-07 02:08:17,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2019-11-07 02:08:17,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-07 02:08:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2019-11-07 02:08:17,021 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 11 [2019-11-07 02:08:17,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:08:17,021 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2019-11-07 02:08:17,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:08:17,021 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2019-11-07 02:08:17,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-07 02:08:17,022 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:17,022 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:17,023 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:17,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:17,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1429193867, now seen corresponding path program 1 times [2019-11-07 02:08:17,023 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:17,024 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871860414] [2019-11-07 02:08:17,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:17,063 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 02:08:17,063 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871860414] [2019-11-07 02:08:17,063 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:08:17,064 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:08:17,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129376174] [2019-11-07 02:08:17,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:08:17,064 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:17,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:08:17,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:08:17,065 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 3 states. [2019-11-07 02:08:17,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:08:17,144 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2019-11-07 02:08:17,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:08:17,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-07 02:08:17,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:08:17,146 INFO L225 Difference]: With dead ends: 134 [2019-11-07 02:08:17,146 INFO L226 Difference]: Without dead ends: 82 [2019-11-07 02:08:17,147 INFO L630 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 [2019-11-07 02:08:17,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-07 02:08:17,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 73. [2019-11-07 02:08:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-11-07 02:08:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2019-11-07 02:08:17,156 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 15 [2019-11-07 02:08:17,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:08:17,156 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2019-11-07 02:08:17,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:08:17,157 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2019-11-07 02:08:17,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-07 02:08:17,157 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:17,158 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:17,158 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:17,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:17,159 INFO L82 PathProgramCache]: Analyzing trace with hash -529264867, now seen corresponding path program 1 times [2019-11-07 02:08:17,159 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:17,159 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675045421] [2019-11-07 02:08:17,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:17,228 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 02:08:17,229 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675045421] [2019-11-07 02:08:17,229 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:08:17,229 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 02:08:17,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204413174] [2019-11-07 02:08:17,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:08:17,230 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:17,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:08:17,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:08:17,231 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 4 states. [2019-11-07 02:08:17,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:08:17,327 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2019-11-07 02:08:17,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 02:08:17,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-07 02:08:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:08:17,329 INFO L225 Difference]: With dead ends: 82 [2019-11-07 02:08:17,329 INFO L226 Difference]: Without dead ends: 68 [2019-11-07 02:08:17,329 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 02:08:17,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-07 02:08:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-11-07 02:08:17,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-07 02:08:17,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2019-11-07 02:08:17,336 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 18 [2019-11-07 02:08:17,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:08:17,336 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2019-11-07 02:08:17,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:08:17,336 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2019-11-07 02:08:17,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-07 02:08:17,337 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:17,338 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] [2019-11-07 02:08:17,338 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:17,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:17,339 INFO L82 PathProgramCache]: Analyzing trace with hash -2109931812, now seen corresponding path program 1 times [2019-11-07 02:08:17,339 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:17,339 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256110290] [2019-11-07 02:08:17,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:17,486 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 02:08:17,487 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256110290] [2019-11-07 02:08:17,488 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377894254] [2019-11-07 02:08:17,488 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 02:08:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:17,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-07 02:08:17,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:08:17,685 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 [2019-11-07 02:08:17,686 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:17,699 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:17,699 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-07 02:08:17,700 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-11-07 02:08:17,740 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:17,740 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 [2019-11-07 02:08:17,741 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:17,769 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:17,773 INFO L392 ElimStorePlain]: Different costs {0=[|#memory_$Pointer$.offset|, |v_#memory_$Pointer$.offset_41|], 10=[|v_#memory_$Pointer$.base_41|]} [2019-11-07 02:08:17,780 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:17,793 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:17,793 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.offset_41| vanished before elimination [2019-11-07 02:08:17,797 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:08:17,843 INFO L341 Elim1Store]: treesize reduction 73, result has 29.1 percent of original size [2019-11-07 02:08:17,844 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 [2019-11-07 02:08:17,844 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:17,867 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:17,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 02:08:17,877 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. [2019-11-07 02:08:17,878 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:343, output treesize:54 [2019-11-07 02:08:17,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 02:08:17,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 02:08:20,040 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:20,041 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 [2019-11-07 02:08:20,042 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:20,052 INFO L567 ElimStorePlain]: treesize reduction 12, result has 42.9 percent of original size [2019-11-07 02:08:20,053 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 02:08:20,053 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:4 [2019-11-07 02:08:20,057 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 02:08:20,058 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:08:20,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:20,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:20,069 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:20,107 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]} [2019-11-07 02:08:20,130 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:08:20,138 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-07 02:08:20,310 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2019-11-07 02:08:20,310 INFO L341 Elim1Store]: treesize reduction 344, result has 32.3 percent of original size [2019-11-07 02:08:20,311 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 [2019-11-07 02:08:20,312 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:40,584 WARN L191 SmtUtils]: Spent 20.27 s on a formula simplification. DAG size of input: 203 DAG size of output: 203 [2019-11-07 02:08:40,585 INFO L567 ElimStorePlain]: treesize reduction 9, result has 99.3 percent of original size [2019-11-07 02:08:40,655 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:08:40,672 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-07 02:08:40,897 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2019-11-07 02:08:40,898 INFO L341 Elim1Store]: treesize reduction 344, result has 32.3 percent of original size [2019-11-07 02:08:40,899 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 [2019-11-07 02:08:40,900 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:52,776 WARN L191 SmtUtils]: Spent 11.87 s on a formula simplification that was a NOOP. DAG size: 219 [2019-11-07 02:08:52,776 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:53,051 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:08:53,232 INFO L235 Elim1Store]: Index analysis took 315 ms [2019-11-07 02:08:53,379 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:53,380 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 [2019-11-07 02:08:53,381 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:53,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:53,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-07 02:08:53,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:53,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:53,386 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:53,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:53,389 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.