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/loops/n.c24.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:45:03,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:45:03,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:45:03,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:45:03,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:45:03,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:45:03,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:45:03,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:45:03,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:45:03,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:45:03,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:45:03,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:45:03,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:45:03,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:45:03,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:45:03,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:45:03,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:45:03,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:45:03,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:45:03,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:45:03,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:45:03,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:45:03,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:45:03,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:45:03,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:45:03,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:45:03,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:45:03,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:45:03,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:45:03,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:45:03,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:45:03,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:45:03,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:45:03,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:45:03,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:45:03,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:45:03,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:45:03,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:45:03,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:45:03,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:45:03,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:45:03,377 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 [2019-10-07 13:45:03,398 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:45:03,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:45:03,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:45:03,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:45:03,401 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:45:03,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:45:03,401 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:45:03,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:45:03,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:45:03,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:45:03,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:45:03,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:45:03,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:45:03,404 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:45:03,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:45:03,404 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:45:03,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:45:03,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:45:03,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:45:03,405 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:45:03,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:45:03,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:45:03,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:45:03,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:45:03,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:45:03,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:45:03,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:45:03,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:45:03,407 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 [2019-10-07 13:45:03,686 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:45:03,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:45:03,708 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:45:03,709 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:45:03,710 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:45:03,710 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c24.i [2019-10-07 13:45:03,776 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31f9427b/ee59553d7bbd49c6a547e75b87c08ed1/FLAGff47df7bb [2019-10-07 13:45:04,253 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:45:04,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c24.i [2019-10-07 13:45:04,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31f9427b/ee59553d7bbd49c6a547e75b87c08ed1/FLAGff47df7bb [2019-10-07 13:45:04,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31f9427b/ee59553d7bbd49c6a547e75b87c08ed1 [2019-10-07 13:45:04,641 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:45:04,643 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:45:04,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:45:04,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:45:04,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:45:04,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:45:04" (1/1) ... [2019-10-07 13:45:04,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ae7e711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:45:04, skipping insertion in model container [2019-10-07 13:45:04,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:45:04" (1/1) ... [2019-10-07 13:45:04,658 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:45:04,687 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:45:04,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:45:05,060 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:45:05,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:45:05,141 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:45:05,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:45:05 WrapperNode [2019-10-07 13:45:05,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:45:05,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:45:05,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:45:05,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:45:05,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:45:05" (1/1) ... [2019-10-07 13:45:05,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:45:05" (1/1) ... [2019-10-07 13:45:05,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:45:05" (1/1) ... [2019-10-07 13:45:05,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:45:05" (1/1) ... [2019-10-07 13:45:05,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:45:05" (1/1) ... [2019-10-07 13:45:05,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:45:05" (1/1) ... [2019-10-07 13:45:05,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:45:05" (1/1) ... [2019-10-07 13:45:05,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:45:05,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:45:05,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:45:05,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:45:05,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:45:05" (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 [2019-10-07 13:45:05,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:45:05,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:45:05,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 13:45:05,243 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2019-10-07 13:45:05,243 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-10-07 13:45:05,244 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:45:05,244 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2019-10-07 13:45:05,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:45:05,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:45:05,244 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-07 13:45:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2019-10-07 13:45:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2019-10-07 13:45:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-07 13:45:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2019-10-07 13:45:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2019-10-07 13:45:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2019-10-07 13:45:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2019-10-07 13:45:05,246 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2019-10-07 13:45:05,246 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2019-10-07 13:45:05,246 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2019-10-07 13:45:05,246 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2019-10-07 13:45:05,246 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2019-10-07 13:45:05,246 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2019-10-07 13:45:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2019-10-07 13:45:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2019-10-07 13:45:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2019-10-07 13:45:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2019-10-07 13:45:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2019-10-07 13:45:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2019-10-07 13:45:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2019-10-07 13:45:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2019-10-07 13:45:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2019-10-07 13:45:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2019-10-07 13:45:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2019-10-07 13:45:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2019-10-07 13:45:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2019-10-07 13:45:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-10-07 13:45:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2019-10-07 13:45:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2019-10-07 13:45:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2019-10-07 13:45:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2019-10-07 13:45:05,250 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2019-10-07 13:45:05,250 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2019-10-07 13:45:05,250 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2019-10-07 13:45:05,250 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2019-10-07 13:45:05,250 INFO L130 BoogieDeclarations]: Found specification of procedure index [2019-10-07 13:45:05,250 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2019-10-07 13:45:05,250 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2019-10-07 13:45:05,251 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2019-10-07 13:45:05,251 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2019-10-07 13:45:05,251 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2019-10-07 13:45:05,251 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2019-10-07 13:45:05,251 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2019-10-07 13:45:05,251 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2019-10-07 13:45:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2019-10-07 13:45:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2019-10-07 13:45:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:45:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2019-10-07 13:45:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-10-07 13:45:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:45:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:45:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:45:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 13:45:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2019-10-07 13:45:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:45:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:45:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:45:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-07 13:45:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-07 13:45:05,860 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:45:05,860 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-07 13:45:05,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:45:05 BoogieIcfgContainer [2019-10-07 13:45:05,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:45:05,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:45:05,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:45:05,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:45:05,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:45:04" (1/3) ... [2019-10-07 13:45:05,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163ca65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:45:05, skipping insertion in model container [2019-10-07 13:45:05,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:45:05" (2/3) ... [2019-10-07 13:45:05,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163ca65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:45:05, skipping insertion in model container [2019-10-07 13:45:05,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:45:05" (3/3) ... [2019-10-07 13:45:05,870 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c24.i [2019-10-07 13:45:05,880 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:45:05,888 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:45:05,899 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:45:05,922 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:45:05,922 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:45:05,923 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:45:05,923 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:45:05,923 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:45:05,923 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:45:05,923 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:45:05,923 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:45:05,938 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2019-10-07 13:45:05,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 13:45:05,945 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:45:05,946 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:45:05,948 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:45:05,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:45:05,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1089030475, now seen corresponding path program 1 times [2019-10-07 13:45:05,963 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:45:05,964 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:45:05,964 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:45:05,964 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:45:05,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:45:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:45:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:45:06,129 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:45:06,129 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:45:06,130 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:45:06,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:45:06,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:45:06,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:45:06,150 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2019-10-07 13:45:06,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:45:06,214 INFO L93 Difference]: Finished difference Result 100 states and 137 transitions. [2019-10-07 13:45:06,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:45:06,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-07 13:45:06,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:45:06,223 INFO L225 Difference]: With dead ends: 100 [2019-10-07 13:45:06,223 INFO L226 Difference]: Without dead ends: 54 [2019-10-07 13:45:06,227 INFO L606 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 [2019-10-07 13:45:06,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-07 13:45:06,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2019-10-07 13:45:06,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-07 13:45:06,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2019-10-07 13:45:06,270 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 11 [2019-10-07 13:45:06,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:45:06,271 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2019-10-07 13:45:06,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:45:06,271 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2019-10-07 13:45:06,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-07 13:45:06,272 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:45:06,272 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:45:06,273 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:45:06,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:45:06,273 INFO L82 PathProgramCache]: Analyzing trace with hash 2137322534, now seen corresponding path program 1 times [2019-10-07 13:45:06,274 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:45:06,274 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:45:06,274 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:45:06,274 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:45:06,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:45:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:45:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 13:45:06,402 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:45:06,402 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:45:06,403 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 13:45:06,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 13:45:06,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 13:45:06,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:45:06,406 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 6 states. [2019-10-07 13:45:06,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:45:06,479 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2019-10-07 13:45:06,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:45:06,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-10-07 13:45:06,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:45:06,482 INFO L225 Difference]: With dead ends: 60 [2019-10-07 13:45:06,482 INFO L226 Difference]: Without dead ends: 55 [2019-10-07 13:45:06,483 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:45:06,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-07 13:45:06,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 39. [2019-10-07 13:45:06,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-07 13:45:06,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2019-10-07 13:45:06,493 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 16 [2019-10-07 13:45:06,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:45:06,493 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2019-10-07 13:45:06,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 13:45:06,493 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2019-10-07 13:45:06,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-07 13:45:06,494 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:45:06,495 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:45:06,495 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:45:06,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:45:06,496 INFO L82 PathProgramCache]: Analyzing trace with hash 134584389, now seen corresponding path program 1 times [2019-10-07 13:45:06,496 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:45:06,496 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:45:06,496 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:45:06,496 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:45:06,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:45:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:45:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 13:45:06,656 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:45:06,656 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:45:06,656 INFO L95 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 [2019-10-07 13:45:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:45:06,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 13:45:06,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:45:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 13:45:06,802 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:45:06,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 13:45:06,886 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:45:06,917 INFO L162 IcfgInterpreter]: Started Sifa with 22 locations of interest [2019-10-07 13:45:06,918 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:45:06,927 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:45:06,939 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:45:06,939 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:45:07,088 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 13:45:07,849 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 13:45:07,875 INFO L199 IcfgInterpreter]: Interpreting procedure foo with input of size 3 for LOIs [2019-10-07 13:45:07,881 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:45:07,889 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:45:07,889 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:45:07,890 INFO L193 IcfgInterpreter]: Reachable states at location L143-4 satisfy 257#(and (<= 0 main_~tmp_cnt~0) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 1000 main_~i~0) (<= 0 main_~offset~0)) [2019-10-07 13:45:07,890 INFO L193 IcfgInterpreter]: Reachable states at location L143-3 satisfy 229#(or (and (<= 0 main_~tmp_cnt~0) (<= 1 main_~i~0) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (not (< main_~offset~0 main_~tmp_cnt~0)) (<= 0 main_~offset~0)) (and (<= 0 main_~i~0) (<= main_~i~0 0) (= main_~i~0 0))) [2019-10-07 13:45:07,891 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 299#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:45:07,891 INFO L193 IcfgInterpreter]: Reachable states at location L152-1 satisfy 181#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (= |main_#t~ret9| (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (<= 0 main_~offset~0)) [2019-10-07 13:45:07,891 INFO L193 IcfgInterpreter]: Reachable states at location L152 satisfy 169#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (< main_~offset~0 main_~tmp_cnt~0) (<= 0 main_~offset~0)) [2019-10-07 13:45:07,892 INFO L193 IcfgInterpreter]: Reachable states at location L153 satisfy 223#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (< main_~offset~0 main_~tmp_cnt~0) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (<= 0 main_~offset~0)) [2019-10-07 13:45:07,892 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 281#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:45:07,893 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 276#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 13:45:07,894 INFO L193 IcfgInterpreter]: Reachable states at location fooENTRY satisfy 290#(= |#memory_int| |old(#memory_int)|) [2019-10-07 13:45:07,894 INFO L193 IcfgInterpreter]: Reachable states at location L178-2 satisfy 208#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (not (= main_~ret~0 0)) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (<= 0 main_~offset~0) (not (= main_~ret~0 1)) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= (+ main_~ret~0 1) 0) (= main_~ret~0 (- 1)) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|))) [2019-10-07 13:45:07,894 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:45:07,895 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:45:07,895 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 304#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:45:07,895 INFO L193 IcfgInterpreter]: Reachable states at location L145 satisfy 262#(and (or (<= main_~i~0 1000) (and (<= 0 main_~i~0) (<= main_~i~0 0))) (or (and (<= 0 main_~tmp_cnt~0) (< main_~i~0 1000) (<= 1 main_~i~0) (<= main_~tmp_cnt~0 2147483647) (<= 0 (+ main_~ret~0 2147483648)) (not (< main_~offset~0 main_~tmp_cnt~0)) (<= main_~ret~0 2147483647) (<= 0 main_~offset~0)) (and (< main_~i~0 1000) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~ret~0 2147483647) (<= main_~i~0 0) (= main_~i~0 0)))) [2019-10-07 13:45:07,895 INFO L193 IcfgInterpreter]: Reachable states at location fooEXIT satisfy 295#(exists ((|v_foo_#t~nondet1_11| Int)) (and (= (store |old(#memory_int)| foo_~x.base (store (select |old(#memory_int)| foo_~x.base) foo_~x.offset |v_foo_#t~nondet1_11|)) |#memory_int|) (<= |v_foo_#t~nondet1_11| 2147483647) (= |foo_#res| (select (select |#memory_int| foo_~x.base) foo_~x.offset)) (<= 0 (+ |v_foo_#t~nondet1_11| 2147483648)) (= |foo_#in~x.base| foo_~x.base) (= foo_~x.offset |foo_#in~x.offset|))) [2019-10-07 13:45:07,896 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:45:07,896 INFO L193 IcfgInterpreter]: Reachable states at location L157 satisfy 218#(and (not (= main_~ret~0 1)) (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (not (= main_~ret~0 0)) (< main_~offset~0 main_~tmp_cnt~0) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (<= 0 main_~offset~0)) [2019-10-07 13:45:07,896 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 286#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:45:07,896 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 271#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-07 13:45:07,897 INFO L193 IcfgInterpreter]: Reachable states at location L148 satisfy 267#(and (or (and (< main_~i~0 1000) (<= 1 main_~i~0) (= main_~ret~0 0) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~ret~0 2147483647) (<= 0 main_~offset~0)) (and (< main_~i~0 1000) (= main_~ret~0 0) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~ret~0 2147483647) (= main_~i~0 0))) (or (and (<= 0 main_~i~0) (<= 0 main_~ret~0) (<= main_~tmp_cnt~0 2147483647) (<= 0 (+ main_~tmp_cnt~0 2147483648)) (<= main_~ret~0 0) (<= main_~i~0 0)) (and (<= main_~i~0 1000) (<= 1 main_~i~0) (<= 0 main_~ret~0) (<= main_~tmp_cnt~0 2147483647) (<= 0 (+ main_~tmp_cnt~0 2147483648)) (<= main_~ret~0 0) (<= 0 main_~offset~0)))) [2019-10-07 13:45:07,897 INFO L193 IcfgInterpreter]: Reachable states at location L150-2 satisfy 164#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 0 main_~offset~0)) [2019-10-07 13:45:07,897 INFO L193 IcfgInterpreter]: Reachable states at location L141-3 satisfy 68#true [2019-10-07 13:45:08,904 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:45:08,905 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4, 20] total 29 [2019-10-07 13:45:08,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-10-07 13:45:08,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-10-07 13:45:08,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2019-10-07 13:45:08,908 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 29 states. [2019-10-07 13:45:11,210 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2019-10-07 13:45:18,577 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2019-10-07 13:45:21,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:45:21,741 INFO L93 Difference]: Finished difference Result 454 states and 669 transitions. [2019-10-07 13:45:21,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2019-10-07 13:45:21,741 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 24 [2019-10-07 13:45:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:45:21,749 INFO L225 Difference]: With dead ends: 454 [2019-10-07 13:45:21,750 INFO L226 Difference]: Without dead ends: 418 [2019-10-07 13:45:21,761 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9497 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=2725, Invalid=22715, Unknown=0, NotChecked=0, Total=25440 [2019-10-07 13:45:21,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2019-10-07 13:45:21,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 107. [2019-10-07 13:45:21,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-10-07 13:45:21,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 143 transitions. [2019-10-07 13:45:21,803 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 143 transitions. Word has length 24 [2019-10-07 13:45:21,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:45:21,803 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 143 transitions. [2019-10-07 13:45:21,803 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-10-07 13:45:21,803 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 143 transitions. [2019-10-07 13:45:21,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-07 13:45:21,806 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:45:21,807 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:45:22,007 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:45:22,008 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:45:22,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:45:22,009 INFO L82 PathProgramCache]: Analyzing trace with hash -90508299, now seen corresponding path program 2 times [2019-10-07 13:45:22,009 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:45:22,009 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:45:22,010 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:45:22,010 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:45:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:45:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:45:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 13:45:22,162 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:45:22,162 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:45:22,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:45:22,273 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-07 13:45:22,273 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:45:22,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 13:45:22,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:45:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-10-07 13:45:22,357 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:45:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-10-07 13:45:22,449 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:45:22,451 INFO L162 IcfgInterpreter]: Started Sifa with 22 locations of interest [2019-10-07 13:45:22,451 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:45:22,451 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:45:22,452 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:45:22,452 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:45:22,479 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 13:45:23,320 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 13:45:23,331 INFO L199 IcfgInterpreter]: Interpreting procedure foo with input of size 3 for LOIs [2019-10-07 13:45:23,334 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:45:23,337 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:45:23,337 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:45:23,338 INFO L193 IcfgInterpreter]: Reachable states at location L143-4 satisfy 468#(and (<= 0 main_~tmp_cnt~0) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 1000 main_~i~0) (<= 0 main_~offset~0)) [2019-10-07 13:45:23,338 INFO L193 IcfgInterpreter]: Reachable states at location L143-3 satisfy 440#(or (and (<= 0 main_~i~0) (<= main_~i~0 0) (= main_~i~0 0)) (and (<= 0 main_~tmp_cnt~0) (<= 0 (+ main_~ret~0 1)) (<= 1 main_~i~0) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (not (< main_~offset~0 main_~tmp_cnt~0)) (<= 0 main_~offset~0))) [2019-10-07 13:45:23,338 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 505#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:45:23,338 INFO L193 IcfgInterpreter]: Reachable states at location L152-1 satisfy 392#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 1)) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (= |main_#t~ret9| (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (<= 0 main_~offset~0)) [2019-10-07 13:45:23,339 INFO L193 IcfgInterpreter]: Reachable states at location L152 satisfy 380#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 1)) (<= main_~offset~0 2147483647) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (< main_~offset~0 main_~tmp_cnt~0) (<= 0 main_~offset~0)) [2019-10-07 13:45:23,339 INFO L193 IcfgInterpreter]: Reachable states at location L153 satisfy 434#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (<= 0 main_~offset~0)) [2019-10-07 13:45:23,339 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 487#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:45:23,340 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 482#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 13:45:23,340 INFO L193 IcfgInterpreter]: Reachable states at location fooENTRY satisfy 496#(= |#memory_int| |old(#memory_int)|) [2019-10-07 13:45:23,340 INFO L193 IcfgInterpreter]: Reachable states at location L178-2 satisfy 419#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (not (= main_~ret~0 0)) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (<= 0 main_~offset~0) (not (= main_~ret~0 1)) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= (+ main_~ret~0 1) 0) (= main_~ret~0 (- 1)) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|))) [2019-10-07 13:45:23,341 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:45:23,341 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:45:23,341 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 510#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:45:23,341 INFO L193 IcfgInterpreter]: Reachable states at location L145 satisfy 473#(and (or (<= main_~i~0 1000) (and (<= 0 main_~i~0) (<= main_~i~0 0))) (or (and (<= 0 main_~tmp_cnt~0) (< main_~i~0 1000) (<= 1 main_~i~0) (<= main_~tmp_cnt~0 2147483647) (<= 0 (+ main_~ret~0 2147483648)) (not (< main_~offset~0 main_~tmp_cnt~0)) (<= main_~ret~0 2147483647) (<= 0 main_~offset~0)) (and (< main_~i~0 1000) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~ret~0 2147483647) (<= main_~i~0 0) (= main_~i~0 0)))) [2019-10-07 13:45:23,341 INFO L193 IcfgInterpreter]: Reachable states at location fooEXIT satisfy 501#(exists ((|v_foo_#t~nondet1_19| Int)) (and (= |#memory_int| (store |old(#memory_int)| foo_~x.base (store (select |old(#memory_int)| foo_~x.base) foo_~x.offset |v_foo_#t~nondet1_19|))) (<= 0 (+ |v_foo_#t~nondet1_19| 2147483648)) (= |foo_#res| (select (select |#memory_int| foo_~x.base) foo_~x.offset)) (= |foo_#in~x.base| foo_~x.base) (= foo_~x.offset |foo_#in~x.offset|) (<= |v_foo_#t~nondet1_19| 2147483647))) [2019-10-07 13:45:23,342 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:45:23,342 INFO L193 IcfgInterpreter]: Reachable states at location L157 satisfy 429#(and (not (= main_~ret~0 1)) (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (not (= main_~ret~0 0)) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (<= 0 main_~offset~0)) [2019-10-07 13:45:23,342 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 492#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:45:23,342 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 477#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| 0))) [2019-10-07 13:45:23,343 INFO L193 IcfgInterpreter]: Reachable states at location L150-2 satisfy 375#(and (or (and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 0 main_~offset~0)) (and (= 0 main_~offset~0) (= main_~ret~0 0) (<= 0 (+ main_~tmp_cnt~0 2147483648)) (not (< main_~tmp_cnt~0 0)))) (or (and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 0 main_~offset~0)) (and (<= main_~offset~0 0) (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 main_~ret~0) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 0 main_~offset~0)))) [2019-10-07 13:45:23,343 INFO L193 IcfgInterpreter]: Reachable states at location L148 satisfy 301#(and (<= 0 main_~i~0) (<= 0 main_~ret~0) (<= main_~tmp_cnt~0 2147483647) (= main_~ret~0 0) (<= 0 (+ main_~tmp_cnt~0 2147483648)) (<= main_~ret~0 0)) [2019-10-07 13:45:23,343 INFO L193 IcfgInterpreter]: Reachable states at location L141-3 satisfy 68#true [2019-10-07 13:45:24,226 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:45:24,226 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 20] total 36 [2019-10-07 13:45:24,228 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-10-07 13:45:24,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-10-07 13:45:24,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2019-10-07 13:45:24,229 INFO L87 Difference]: Start difference. First operand 107 states and 143 transitions. Second operand 36 states. [2019-10-07 13:45:25,974 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2019-10-07 13:45:30,884 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2019-10-07 13:45:39,084 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2019-10-07 13:45:47,787 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2019-10-07 13:45:54,559 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2019-10-07 13:45:57,112 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2019-10-07 13:46:05,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:46:05,340 INFO L93 Difference]: Finished difference Result 1473 states and 2179 transitions. [2019-10-07 13:46:05,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 413 states. [2019-10-07 13:46:05,341 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 47 [2019-10-07 13:46:05,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:46:05,353 INFO L225 Difference]: With dead ends: 1473 [2019-10-07 13:46:05,353 INFO L226 Difference]: Without dead ends: 1372 [2019-10-07 13:46:05,372 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 444 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88358 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=16377, Invalid=182093, Unknown=0, NotChecked=0, Total=198470 [2019-10-07 13:46:05,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2019-10-07 13:46:05,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 229. [2019-10-07 13:46:05,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2019-10-07 13:46:05,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 314 transitions. [2019-10-07 13:46:05,447 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 314 transitions. Word has length 47 [2019-10-07 13:46:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:46:05,448 INFO L462 AbstractCegarLoop]: Abstraction has 229 states and 314 transitions. [2019-10-07 13:46:05,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-10-07 13:46:05,448 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 314 transitions. [2019-10-07 13:46:05,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-07 13:46:05,453 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:46:05,453 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:46:05,662 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:46:05,704 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:46:05,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:46:05,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1648379082, now seen corresponding path program 3 times [2019-10-07 13:46:05,705 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:46:05,705 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:05,705 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:05,705 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:46:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:46:05,926 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2019-10-07 13:46:05,927 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:05,927 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:46:05,927 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:46:06,078 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 13:46:06,079 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:46:06,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-07 13:46:06,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:46:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-10-07 13:46:06,102 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:46:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-10-07 13:46:06,309 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:46:06,311 INFO L162 IcfgInterpreter]: Started Sifa with 22 locations of interest [2019-10-07 13:46:06,311 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:46:06,312 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:46:06,312 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:46:06,312 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:46:06,336 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 13:46:07,030 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 13:46:07,044 INFO L199 IcfgInterpreter]: Interpreting procedure foo with input of size 3 for LOIs [2019-10-07 13:46:07,046 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:46:07,049 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:46:07,049 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:46:07,049 INFO L193 IcfgInterpreter]: Reachable states at location L143-4 satisfy 468#(and (<= 0 main_~tmp_cnt~0) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 1000 main_~i~0) (<= 0 main_~offset~0)) [2019-10-07 13:46:07,049 INFO L193 IcfgInterpreter]: Reachable states at location L143-3 satisfy 440#(or (and (<= 0 main_~i~0) (<= main_~i~0 0) (= main_~i~0 0)) (and (<= 0 main_~tmp_cnt~0) (<= 0 (+ main_~ret~0 1)) (<= 1 main_~i~0) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (not (< main_~offset~0 main_~tmp_cnt~0)) (<= 0 main_~offset~0))) [2019-10-07 13:46:07,050 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 505#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:46:07,050 INFO L193 IcfgInterpreter]: Reachable states at location L152-1 satisfy 392#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 1)) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (= |main_#t~ret9| (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (<= 0 main_~offset~0)) [2019-10-07 13:46:07,050 INFO L193 IcfgInterpreter]: Reachable states at location L152 satisfy 380#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 1)) (<= main_~offset~0 2147483647) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (< main_~offset~0 main_~tmp_cnt~0) (<= 0 main_~offset~0)) [2019-10-07 13:46:07,050 INFO L193 IcfgInterpreter]: Reachable states at location L153 satisfy 434#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (<= 0 main_~offset~0)) [2019-10-07 13:46:07,050 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 487#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:46:07,051 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 482#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 13:46:07,051 INFO L193 IcfgInterpreter]: Reachable states at location fooENTRY satisfy 496#(= |#memory_int| |old(#memory_int)|) [2019-10-07 13:46:07,051 INFO L193 IcfgInterpreter]: Reachable states at location L178-2 satisfy 419#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (not (= main_~ret~0 0)) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (<= 0 main_~offset~0) (not (= main_~ret~0 1)) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= (+ main_~ret~0 1) 0) (= main_~ret~0 (- 1)) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|))) [2019-10-07 13:46:07,051 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:46:07,051 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:46:07,052 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 510#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:46:07,052 INFO L193 IcfgInterpreter]: Reachable states at location L145 satisfy 473#(and (or (<= main_~i~0 1000) (and (<= 0 main_~i~0) (<= main_~i~0 0))) (or (and (<= 0 main_~tmp_cnt~0) (< main_~i~0 1000) (<= 1 main_~i~0) (<= main_~tmp_cnt~0 2147483647) (<= 0 (+ main_~ret~0 2147483648)) (not (< main_~offset~0 main_~tmp_cnt~0)) (<= main_~ret~0 2147483647) (<= 0 main_~offset~0)) (and (< main_~i~0 1000) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~ret~0 2147483647) (<= main_~i~0 0) (= main_~i~0 0)))) [2019-10-07 13:46:07,052 INFO L193 IcfgInterpreter]: Reachable states at location fooEXIT satisfy 501#(exists ((|v_foo_#t~nondet1_30| Int)) (and (= (store |old(#memory_int)| foo_~x.base (store (select |old(#memory_int)| foo_~x.base) foo_~x.offset |v_foo_#t~nondet1_30|)) |#memory_int|) (<= |v_foo_#t~nondet1_30| 2147483647) (<= 0 (+ |v_foo_#t~nondet1_30| 2147483648)) (= |foo_#res| (select (select |#memory_int| foo_~x.base) foo_~x.offset)) (= |foo_#in~x.base| foo_~x.base) (= foo_~x.offset |foo_#in~x.offset|))) [2019-10-07 13:46:07,052 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:46:07,053 INFO L193 IcfgInterpreter]: Reachable states at location L157 satisfy 429#(and (not (= main_~ret~0 1)) (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (not (= main_~ret~0 0)) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (<= 0 main_~offset~0)) [2019-10-07 13:46:07,053 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 492#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:46:07,053 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 477#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-07 13:46:07,053 INFO L193 IcfgInterpreter]: Reachable states at location L150-2 satisfy 375#(and (or (and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 0 main_~offset~0)) (and (= 0 main_~offset~0) (= main_~ret~0 0) (<= 0 (+ main_~tmp_cnt~0 2147483648)) (not (< main_~tmp_cnt~0 0)))) (or (and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 0 main_~offset~0)) (and (<= main_~offset~0 0) (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 main_~ret~0) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 0 main_~offset~0)))) [2019-10-07 13:46:07,054 INFO L193 IcfgInterpreter]: Reachable states at location L148 satisfy 301#(and (<= 0 main_~i~0) (<= 0 main_~ret~0) (<= main_~tmp_cnt~0 2147483647) (= main_~ret~0 0) (<= 0 (+ main_~tmp_cnt~0 2147483648)) (<= main_~ret~0 0)) [2019-10-07 13:46:07,054 INFO L193 IcfgInterpreter]: Reachable states at location L141-3 satisfy 68#true [2019-10-07 13:46:07,962 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:46:07,963 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 20] total 44 [2019-10-07 13:46:07,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-10-07 13:46:07,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-10-07 13:46:07,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=1536, Unknown=0, NotChecked=0, Total=1892 [2019-10-07 13:46:07,966 INFO L87 Difference]: Start difference. First operand 229 states and 314 transitions. Second operand 44 states. [2019-10-07 13:46:10,584 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2019-10-07 13:46:19,376 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2019-10-07 13:46:31,617 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2019-10-07 13:46:36,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:46:36,409 INFO L93 Difference]: Finished difference Result 1834 states and 2768 transitions. [2019-10-07 13:46:36,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 321 states. [2019-10-07 13:46:36,411 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 85 [2019-10-07 13:46:36,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:46:36,421 INFO L225 Difference]: With dead ends: 1834 [2019-10-07 13:46:36,421 INFO L226 Difference]: Without dead ends: 1621 [2019-10-07 13:46:36,432 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55857 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=19263, Invalid=111419, Unknown=0, NotChecked=0, Total=130682 [2019-10-07 13:46:36,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2019-10-07 13:46:36,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 445. [2019-10-07 13:46:36,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-10-07 13:46:36,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 614 transitions. [2019-10-07 13:46:36,520 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 614 transitions. Word has length 85 [2019-10-07 13:46:36,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:46:36,520 INFO L462 AbstractCegarLoop]: Abstraction has 445 states and 614 transitions. [2019-10-07 13:46:36,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-10-07 13:46:36,520 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 614 transitions. [2019-10-07 13:46:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-07 13:46:36,528 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:46:36,528 INFO L385 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:46:36,736 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:46:36,737 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:46:36,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:46:36,738 INFO L82 PathProgramCache]: Analyzing trace with hash -2015941254, now seen corresponding path program 4 times [2019-10-07 13:46:36,738 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:46:36,738 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:36,739 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:36,739 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:36,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:46:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:46:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 106 proven. 21 refuted. 0 times theorem prover too weak. 1162 trivial. 0 not checked. [2019-10-07 13:46:36,923 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:36,924 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:46:36,924 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:46:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:46:37,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-07 13:46:37,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:46:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2019-10-07 13:46:37,633 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:46:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2019-10-07 13:46:39,069 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:46:39,073 INFO L162 IcfgInterpreter]: Started Sifa with 22 locations of interest [2019-10-07 13:46:39,074 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:46:39,074 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:46:39,075 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:46:39,075 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:46:39,106 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 13:46:39,460 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 13:46:39,468 INFO L199 IcfgInterpreter]: Interpreting procedure foo with input of size 3 for LOIs [2019-10-07 13:46:39,471 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:46:39,473 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:46:39,474 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:46:39,474 INFO L193 IcfgInterpreter]: Reachable states at location L143-4 satisfy 257#(and (<= 0 main_~tmp_cnt~0) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 1000 main_~i~0) (<= 0 main_~offset~0)) [2019-10-07 13:46:39,474 INFO L193 IcfgInterpreter]: Reachable states at location L143-3 satisfy 229#(or (and (<= 0 main_~tmp_cnt~0) (<= 1 main_~i~0) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (not (< main_~offset~0 main_~tmp_cnt~0)) (<= 0 main_~offset~0)) (and (<= 0 main_~i~0) (<= main_~i~0 0) (= main_~i~0 0))) [2019-10-07 13:46:39,474 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 299#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:46:39,474 INFO L193 IcfgInterpreter]: Reachable states at location L152-1 satisfy 181#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (= |main_#t~ret9| (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (<= 0 main_~offset~0)) [2019-10-07 13:46:39,475 INFO L193 IcfgInterpreter]: Reachable states at location L152 satisfy 169#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (< main_~offset~0 main_~tmp_cnt~0) (<= 0 main_~offset~0)) [2019-10-07 13:46:39,475 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 281#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:46:39,475 INFO L193 IcfgInterpreter]: Reachable states at location L153 satisfy 223#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (<= 0 main_~offset~0)) [2019-10-07 13:46:39,475 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 276#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 13:46:39,475 INFO L193 IcfgInterpreter]: Reachable states at location fooENTRY satisfy 290#(= |#memory_int| |old(#memory_int)|) [2019-10-07 13:46:39,475 INFO L193 IcfgInterpreter]: Reachable states at location L178-2 satisfy 208#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (not (= main_~ret~0 0)) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (<= 0 main_~offset~0) (not (= main_~ret~0 1)) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= (+ main_~ret~0 1) 0) (= main_~ret~0 (- 1)) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|))) [2019-10-07 13:46:39,476 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:46:39,476 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:46:39,476 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 304#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:46:39,476 INFO L193 IcfgInterpreter]: Reachable states at location L145 satisfy 262#(and (or (<= main_~i~0 1000) (and (<= 0 main_~i~0) (<= main_~i~0 0))) (or (and (<= 0 main_~tmp_cnt~0) (< main_~i~0 1000) (<= 1 main_~i~0) (<= main_~tmp_cnt~0 2147483647) (<= 0 (+ main_~ret~0 2147483648)) (not (< main_~offset~0 main_~tmp_cnt~0)) (<= main_~ret~0 2147483647) (<= 0 main_~offset~0)) (and (< main_~i~0 1000) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~ret~0 2147483647) (<= main_~i~0 0) (= main_~i~0 0)))) [2019-10-07 13:46:39,476 INFO L193 IcfgInterpreter]: Reachable states at location fooEXIT satisfy 295#(exists ((|v_foo_#t~nondet1_41| Int)) (and (= (store |old(#memory_int)| foo_~x.base (store (select |old(#memory_int)| foo_~x.base) foo_~x.offset |v_foo_#t~nondet1_41|)) |#memory_int|) (<= |v_foo_#t~nondet1_41| 2147483647) (= |foo_#res| (select (select |#memory_int| foo_~x.base) foo_~x.offset)) (<= 0 (+ |v_foo_#t~nondet1_41| 2147483648)) (= |foo_#in~x.base| foo_~x.base) (= foo_~x.offset |foo_#in~x.offset|))) [2019-10-07 13:46:39,477 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:46:39,477 INFO L193 IcfgInterpreter]: Reachable states at location L157 satisfy 218#(and (not (= main_~ret~0 1)) (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (not (= main_~ret~0 0)) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (<= 0 main_~offset~0)) [2019-10-07 13:46:39,477 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 286#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:46:39,477 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 271#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| 0))) [2019-10-07 13:46:39,477 INFO L193 IcfgInterpreter]: Reachable states at location L148 satisfy 267#(and (or (and (< main_~i~0 1000) (<= 1 main_~i~0) (= main_~ret~0 0) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~ret~0 2147483647) (<= 0 main_~offset~0)) (and (< main_~i~0 1000) (= main_~ret~0 0) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~ret~0 2147483647) (= main_~i~0 0))) (or (and (<= 0 main_~i~0) (<= 0 main_~ret~0) (<= main_~tmp_cnt~0 2147483647) (<= 0 (+ main_~tmp_cnt~0 2147483648)) (<= main_~ret~0 0) (<= main_~i~0 0)) (and (<= main_~i~0 1000) (<= 1 main_~i~0) (<= 0 main_~ret~0) (<= main_~tmp_cnt~0 2147483647) (<= 0 (+ main_~tmp_cnt~0 2147483648)) (<= main_~ret~0 0) (<= 0 main_~offset~0)))) [2019-10-07 13:46:39,478 INFO L193 IcfgInterpreter]: Reachable states at location L150-2 satisfy 164#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 0 main_~offset~0)) [2019-10-07 13:46:39,478 INFO L193 IcfgInterpreter]: Reachable states at location L141-3 satisfy 68#true [2019-10-07 13:46:40,603 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:46:40,603 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 25, 25, 20] total 73 [2019-10-07 13:46:40,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 73 states [2019-10-07 13:46:40,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2019-10-07 13:46:40,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1196, Invalid=4060, Unknown=0, NotChecked=0, Total=5256 [2019-10-07 13:46:40,606 INFO L87 Difference]: Start difference. First operand 445 states and 614 transitions. Second operand 73 states. [2019-10-07 13:47:05,107 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 28 [2019-10-07 13:47:28,711 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2019-10-07 13:47:38,436 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2019-10-07 13:47:43,336 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-10-07 13:47:48,161 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2019-10-07 13:47:53,152 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2019-10-07 13:47:58,030 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2019-10-07 13:48:03,127 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2019-10-07 13:48:08,538 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2019-10-07 13:48:14,226 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2019-10-07 13:48:26,852 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2019-10-07 13:48:38,613 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2019-10-07 13:49:12,670 WARN L191 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2019-10-07 13:49:28,629 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2019-10-07 13:49:52,763 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2019-10-07 13:50:22,614 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2019-10-07 13:51:38,458 WARN L191 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2019-10-07 13:52:07,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:52:07,850 INFO L93 Difference]: Finished difference Result 8285 states and 12254 transitions. [2019-10-07 13:52:07,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2312 states. [2019-10-07 13:52:07,850 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 145 [2019-10-07 13:52:07,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:52:07,895 INFO L225 Difference]: With dead ends: 8285 [2019-10-07 13:52:07,895 INFO L226 Difference]: Without dead ends: 7864 [2019-10-07 13:52:08,118 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2979 GetRequests, 599 SyntacticMatches, 0 SemanticMatches, 2380 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2771595 ImplicationChecksByTransitivity, 260.3s TimeCoverageRelationStatistics Valid=350938, Invalid=5320604, Unknown=0, NotChecked=0, Total=5671542 [2019-10-07 13:52:08,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7864 states. [2019-10-07 13:52:08,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7864 to 891. [2019-10-07 13:52:08,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2019-10-07 13:52:08,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1235 transitions. [2019-10-07 13:52:08,395 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1235 transitions. Word has length 145 [2019-10-07 13:52:08,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:52:08,395 INFO L462 AbstractCegarLoop]: Abstraction has 891 states and 1235 transitions. [2019-10-07 13:52:08,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 73 states. [2019-10-07 13:52:08,396 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1235 transitions. [2019-10-07 13:52:08,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2019-10-07 13:52:08,406 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:52:08,411 INFO L385 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:52:08,618 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:52:08,618 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:52:08,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:52:08,619 INFO L82 PathProgramCache]: Analyzing trace with hash 347853345, now seen corresponding path program 5 times [2019-10-07 13:52:08,619 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:52:08,619 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:52:08,619 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:52:08,619 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:52:08,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:52:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:52:08,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 271 proven. 40 refuted. 0 times theorem prover too weak. 5188 trivial. 0 not checked. [2019-10-07 13:52:09,000 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:52:09,000 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:52:09,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:52:09,382 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-10-07 13:52:09,382 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:52:09,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-07 13:52:09,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:52:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 180 proven. 131 refuted. 0 times theorem prover too weak. 5188 trivial. 0 not checked. [2019-10-07 13:52:09,625 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:52:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 271 proven. 40 refuted. 0 times theorem prover too weak. 5188 trivial. 0 not checked. [2019-10-07 13:52:09,904 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:52:09,907 INFO L162 IcfgInterpreter]: Started Sifa with 22 locations of interest [2019-10-07 13:52:09,907 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:52:09,908 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:52:09,908 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:52:09,908 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:52:09,932 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 13:52:10,844 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 13:52:10,852 INFO L199 IcfgInterpreter]: Interpreting procedure foo with input of size 3 for LOIs [2019-10-07 13:52:10,854 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:52:10,857 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:52:10,857 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:52:10,857 INFO L193 IcfgInterpreter]: Reachable states at location L143-4 satisfy 468#(and (<= 0 main_~tmp_cnt~0) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 1000 main_~i~0) (<= 0 main_~offset~0)) [2019-10-07 13:52:10,858 INFO L193 IcfgInterpreter]: Reachable states at location L143-3 satisfy 440#(or (and (<= 0 main_~i~0) (<= main_~i~0 0) (= main_~i~0 0)) (and (<= 0 main_~tmp_cnt~0) (<= 0 (+ main_~ret~0 1)) (<= 1 main_~i~0) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (not (< main_~offset~0 main_~tmp_cnt~0)) (<= 0 main_~offset~0))) [2019-10-07 13:52:10,858 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 505#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:52:10,858 INFO L193 IcfgInterpreter]: Reachable states at location L152-1 satisfy 392#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 1)) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (= |main_#t~ret9| (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (<= 0 main_~offset~0)) [2019-10-07 13:52:10,859 INFO L193 IcfgInterpreter]: Reachable states at location L152 satisfy 380#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 1)) (<= main_~offset~0 2147483647) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (< main_~offset~0 main_~tmp_cnt~0) (<= 0 main_~offset~0)) [2019-10-07 13:52:10,859 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 487#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:52:10,859 INFO L193 IcfgInterpreter]: Reachable states at location L153 satisfy 434#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (<= 0 main_~offset~0)) [2019-10-07 13:52:10,859 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 482#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 13:52:10,859 INFO L193 IcfgInterpreter]: Reachable states at location fooENTRY satisfy 496#(= |#memory_int| |old(#memory_int)|) [2019-10-07 13:52:10,860 INFO L193 IcfgInterpreter]: Reachable states at location L178-2 satisfy 419#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (not (= main_~ret~0 0)) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (<= 0 main_~offset~0) (not (= main_~ret~0 1)) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= (+ main_~ret~0 1) 0) (= main_~ret~0 (- 1)) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|))) [2019-10-07 13:52:10,860 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:52:10,860 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0))) [2019-10-07 13:52:10,860 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 510#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:52:10,861 INFO L193 IcfgInterpreter]: Reachable states at location L145 satisfy 473#(and (or (<= main_~i~0 1000) (and (<= 0 main_~i~0) (<= main_~i~0 0))) (or (and (<= 0 main_~tmp_cnt~0) (< main_~i~0 1000) (<= 1 main_~i~0) (<= main_~tmp_cnt~0 2147483647) (<= 0 (+ main_~ret~0 2147483648)) (not (< main_~offset~0 main_~tmp_cnt~0)) (<= main_~ret~0 2147483647) (<= 0 main_~offset~0)) (and (< main_~i~0 1000) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~ret~0 2147483647) (<= main_~i~0 0) (= main_~i~0 0)))) [2019-10-07 13:52:10,861 INFO L193 IcfgInterpreter]: Reachable states at location fooEXIT satisfy 501#(exists ((|v_foo_#t~nondet1_55| Int)) (and (= (store |old(#memory_int)| foo_~x.base (store (select |old(#memory_int)| foo_~x.base) foo_~x.offset |v_foo_#t~nondet1_55|)) |#memory_int|) (<= |v_foo_#t~nondet1_55| 2147483647) (<= 0 (+ |v_foo_#t~nondet1_55| 2147483648)) (= |foo_#res| (select (select |#memory_int| foo_~x.base) foo_~x.offset)) (= |foo_#in~x.base| foo_~x.base) (= foo_~x.offset |foo_#in~x.offset|))) [2019-10-07 13:52:10,861 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:52:10,861 INFO L193 IcfgInterpreter]: Reachable states at location L157 satisfy 429#(and (not (= main_~ret~0 1)) (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (not (= main_~ret~0 0)) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (<= 0 main_~offset~0)) [2019-10-07 13:52:10,862 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 492#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:52:10,862 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 477#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| 0))) [2019-10-07 13:52:10,862 INFO L193 IcfgInterpreter]: Reachable states at location L150-2 satisfy 375#(and (or (and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 0 main_~offset~0)) (and (= 0 main_~offset~0) (= main_~ret~0 0) (<= 0 (+ main_~tmp_cnt~0 2147483648)) (not (< main_~tmp_cnt~0 0)))) (or (and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 0 main_~offset~0)) (and (<= main_~offset~0 0) (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 main_~ret~0) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 0 main_~offset~0)))) [2019-10-07 13:52:10,862 INFO L193 IcfgInterpreter]: Reachable states at location L148 satisfy 301#(and (<= 0 main_~i~0) (<= 0 main_~ret~0) (<= main_~tmp_cnt~0 2147483647) (= main_~ret~0 0) (<= 0 (+ main_~tmp_cnt~0 2147483648)) (<= main_~ret~0 0)) [2019-10-07 13:52:10,863 INFO L193 IcfgInterpreter]: Reachable states at location L141-3 satisfy 68#true [2019-10-07 13:52:11,809 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:52:11,810 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 10, 20] total 44 [2019-10-07 13:52:11,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-10-07 13:52:11,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-10-07 13:52:11,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2019-10-07 13:52:11,812 INFO L87 Difference]: Start difference. First operand 891 states and 1235 transitions. Second operand 44 states. [2019-10-07 13:52:28,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:52:28,092 INFO L93 Difference]: Finished difference Result 15676 states and 23138 transitions. [2019-10-07 13:52:28,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2019-10-07 13:52:28,093 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 273 [2019-10-07 13:52:28,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:52:28,186 INFO L225 Difference]: With dead ends: 15676 [2019-10-07 13:52:28,186 INFO L226 Difference]: Without dead ends: 15660 [2019-10-07 13:52:28,196 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 797 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10491 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=3498, Invalid=26258, Unknown=0, NotChecked=0, Total=29756 [2019-10-07 13:52:28,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15660 states. [2019-10-07 13:52:28,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15660 to 975. [2019-10-07 13:52:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2019-10-07 13:52:28,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1361 transitions. [2019-10-07 13:52:28,647 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1361 transitions. Word has length 273 [2019-10-07 13:52:28,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:52:28,648 INFO L462 AbstractCegarLoop]: Abstraction has 975 states and 1361 transitions. [2019-10-07 13:52:28,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-10-07 13:52:28,648 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1361 transitions. [2019-10-07 13:52:28,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2019-10-07 13:52:28,656 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:52:28,657 INFO L385 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:52:28,861 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:52:28,862 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:52:28,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:52:28,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1681475547, now seen corresponding path program 6 times [2019-10-07 13:52:28,862 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:52:28,862 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:52:28,862 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:52:28,863 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:52:28,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:52:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:52:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6087 backedges. 541 proven. 280 refuted. 0 times theorem prover too weak. 5266 trivial. 0 not checked. [2019-10-07 13:52:29,330 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:52:29,331 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:52:29,331 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:52:29,790 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 13:52:29,790 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:52:29,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 48 conjunts are in the unsatisfiable core [2019-10-07 13:52:29,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:52:31,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6087 backedges. 0 proven. 4636 refuted. 0 times theorem prover too weak. 1451 trivial. 0 not checked. [2019-10-07 13:52:31,270 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:52:34,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6087 backedges. 0 proven. 4636 refuted. 0 times theorem prover too weak. 1451 trivial. 0 not checked. [2019-10-07 13:52:34,385 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:52:34,387 INFO L162 IcfgInterpreter]: Started Sifa with 22 locations of interest [2019-10-07 13:52:34,387 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:52:34,388 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:52:34,388 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:52:34,388 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:52:34,412 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 13:52:34,932 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 13:52:34,941 INFO L199 IcfgInterpreter]: Interpreting procedure foo with input of size 3 for LOIs [2019-10-07 13:52:34,943 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:52:34,945 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:52:34,945 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:52:34,945 INFO L193 IcfgInterpreter]: Reachable states at location L143-4 satisfy 468#(and (<= 0 main_~tmp_cnt~0) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 1000 main_~i~0) (<= 0 main_~offset~0)) [2019-10-07 13:52:34,946 INFO L193 IcfgInterpreter]: Reachable states at location L143-3 satisfy 440#(or (and (<= 0 main_~i~0) (<= main_~i~0 0) (= main_~i~0 0)) (and (<= 0 main_~tmp_cnt~0) (<= 0 (+ main_~ret~0 1)) (<= 1 main_~i~0) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (not (< main_~offset~0 main_~tmp_cnt~0)) (<= 0 main_~offset~0))) [2019-10-07 13:52:34,946 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 505#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:52:34,946 INFO L193 IcfgInterpreter]: Reachable states at location L152-1 satisfy 392#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 1)) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (= |main_#t~ret9| (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (<= 0 main_~offset~0)) [2019-10-07 13:52:34,946 INFO L193 IcfgInterpreter]: Reachable states at location L152 satisfy 380#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 1)) (<= main_~offset~0 2147483647) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (< main_~offset~0 main_~tmp_cnt~0) (<= 0 main_~offset~0)) [2019-10-07 13:52:34,946 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 487#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:52:34,946 INFO L193 IcfgInterpreter]: Reachable states at location L153 satisfy 434#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (<= 0 main_~offset~0)) [2019-10-07 13:52:34,946 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 482#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 13:52:34,947 INFO L193 IcfgInterpreter]: Reachable states at location fooENTRY satisfy 496#(= |#memory_int| |old(#memory_int)|) [2019-10-07 13:52:34,947 INFO L193 IcfgInterpreter]: Reachable states at location L178-2 satisfy 419#(and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (not (= main_~ret~0 0)) (< main_~offset~0 main_~tmp_cnt~0) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (<= 0 main_~offset~0) (not (= main_~ret~0 1)) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= (+ main_~ret~0 1) 0) (= main_~ret~0 (- 1)) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|))) [2019-10-07 13:52:34,947 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:52:34,947 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:52:34,947 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 510#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:52:34,947 INFO L193 IcfgInterpreter]: Reachable states at location L145 satisfy 473#(and (or (<= main_~i~0 1000) (and (<= 0 main_~i~0) (<= main_~i~0 0))) (or (and (<= 0 main_~tmp_cnt~0) (< main_~i~0 1000) (<= 1 main_~i~0) (<= main_~tmp_cnt~0 2147483647) (<= 0 (+ main_~ret~0 2147483648)) (not (< main_~offset~0 main_~tmp_cnt~0)) (<= main_~ret~0 2147483647) (<= 0 main_~offset~0)) (and (< main_~i~0 1000) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 2147483648)) (<= main_~ret~0 2147483647) (<= main_~i~0 0) (= main_~i~0 0)))) [2019-10-07 13:52:34,947 INFO L193 IcfgInterpreter]: Reachable states at location fooEXIT satisfy 501#(exists ((|v_foo_#t~nondet1_87| Int)) (and (<= |v_foo_#t~nondet1_87| 2147483647) (= |#memory_int| (store |old(#memory_int)| foo_~x.base (store (select |old(#memory_int)| foo_~x.base) foo_~x.offset |v_foo_#t~nondet1_87|))) (= |foo_#res| (select (select |#memory_int| foo_~x.base) foo_~x.offset)) (<= 0 (+ |v_foo_#t~nondet1_87| 2147483648)) (= |foo_#in~x.base| foo_~x.base) (= foo_~x.offset |foo_#in~x.offset|))) [2019-10-07 13:52:34,948 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:52:34,948 INFO L193 IcfgInterpreter]: Reachable states at location L157 satisfy 429#(and (not (= main_~ret~0 1)) (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= main_~offset~0 2147483647) (<= 0 (+ (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483648)) (<= main_~tmp_cnt~0 2147483647) (not (= main_~ret~0 0)) (< main_~offset~0 main_~tmp_cnt~0) (= main_~ret~0 (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|)) (<= (select (select |#memory_int| |main_~#tel_data~0.base|) |main_~#tel_data~0.offset|) 2147483647) (<= 0 main_~offset~0)) [2019-10-07 13:52:34,948 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 492#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:52:34,948 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 477#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| 0))) [2019-10-07 13:52:34,948 INFO L193 IcfgInterpreter]: Reachable states at location L150-2 satisfy 375#(and (or (and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 0 main_~offset~0)) (and (= 0 main_~offset~0) (= main_~ret~0 0) (<= 0 (+ main_~tmp_cnt~0 2147483648)) (not (< main_~tmp_cnt~0 0)))) (or (and (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 (+ main_~ret~0 1)) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 0 main_~offset~0)) (and (<= main_~offset~0 0) (<= 0 main_~tmp_cnt~0) (<= 0 main_~i~0) (<= 0 main_~ret~0) (<= main_~tmp_cnt~0 2147483647) (<= main_~ret~0 0) (<= 0 main_~offset~0)))) [2019-10-07 13:52:34,948 INFO L193 IcfgInterpreter]: Reachable states at location L148 satisfy 301#(and (<= 0 main_~i~0) (<= 0 main_~ret~0) (<= main_~tmp_cnt~0 2147483647) (= main_~ret~0 0) (<= 0 (+ main_~tmp_cnt~0 2147483648)) (<= main_~ret~0 0)) [2019-10-07 13:52:34,948 INFO L193 IcfgInterpreter]: Reachable states at location L141-3 satisfy 68#true [2019-10-07 13:52:36,399 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:52:36,400 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 49, 49, 20] total 128 [2019-10-07 13:52:36,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 128 states [2019-10-07 13:52:36,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2019-10-07 13:52:36,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4641, Invalid=11615, Unknown=0, NotChecked=0, Total=16256 [2019-10-07 13:52:36,404 INFO L87 Difference]: Start difference. First operand 975 states and 1361 transitions. Second operand 128 states. [2019-10-07 13:52:52,945 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 28 [2019-10-07 13:53:14,367 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2019-10-07 13:53:47,349 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-10-07 13:53:58,779 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-10-07 13:54:29,856 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2019-10-07 13:54:59,652 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2019-10-07 13:55:24,717 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2019-10-07 13:55:37,085 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2019-10-07 13:55:46,965 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2019-10-07 13:56:02,013 WARN L191 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2019-10-07 13:56:54,174 WARN L191 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2019-10-07 13:57:05,668 WARN L191 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2019-10-07 13:57:16,709 WARN L191 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2019-10-07 13:57:46,931 WARN L191 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32