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/heap-manipulation/tree-4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:56:22,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:56:22,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:56:22,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 03:56:22,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 03:56:22,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 03:56:22,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 03:56:22,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 03:56:22,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 03:56:22,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 03:56:22,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 03:56:22,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 03:56:22,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:56:22,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:56:22,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:56:22,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:56:22,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:56:22,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:56:22,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:56:22,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:56:22,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:56:22,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:56:22,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:56:22,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:56:22,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 03:56:22,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 03:56:22,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 03:56:22,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 03:56:22,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 03:56:22,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 03:56:22,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 03:56:22,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 03:56:22,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 03:56:22,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 03:56:22,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 03:56:22,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 03:56:22,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 03:56:22,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 03:56:22,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:56:22,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:56:22,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:56:22,129 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 03:56:22,145 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:56:22,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:56:22,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:56:22,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:56:22,147 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:56:22,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:56:22,148 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:56:22,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:56:22,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:56:22,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:56:22,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:56:22,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:56:22,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:56:22,149 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:56:22,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:56:22,149 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:56:22,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:56:22,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:56:22,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:56:22,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:56:22,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:56:22,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:56:22,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:56:22,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:56:22,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:56:22,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:56:22,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:56:22,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:56:22,152 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 03:56:22,474 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:56:22,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:56:22,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:56:22,500 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:56:22,500 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:56:22,501 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/tree-4.i [2019-10-07 03:56:22,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a052ddcb/9f699f71164b4afabd25ecfe4f6962c9/FLAG5aa66ce5e [2019-10-07 03:56:23,082 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:56:23,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/tree-4.i [2019-10-07 03:56:23,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a052ddcb/9f699f71164b4afabd25ecfe4f6962c9/FLAG5aa66ce5e [2019-10-07 03:56:23,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a052ddcb/9f699f71164b4afabd25ecfe4f6962c9 [2019-10-07 03:56:23,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:56:23,428 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:56:23,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:56:23,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:56:23,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:56:23,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:56:23" (1/1) ... [2019-10-07 03:56:23,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52be2e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:56:23, skipping insertion in model container [2019-10-07 03:56:23,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:56:23" (1/1) ... [2019-10-07 03:56:23,445 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:56:23,494 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:56:23,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:56:23,965 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:56:24,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:56:24,083 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:56:24,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:56:24 WrapperNode [2019-10-07 03:56:24,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:56:24,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:56:24,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:56:24,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:56:24,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:56:24" (1/1) ... [2019-10-07 03:56:24,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:56:24" (1/1) ... [2019-10-07 03:56:24,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:56:24" (1/1) ... [2019-10-07 03:56:24,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:56:24" (1/1) ... [2019-10-07 03:56:24,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:56:24" (1/1) ... [2019-10-07 03:56:24,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:56:24" (1/1) ... [2019-10-07 03:56:24,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:56:24" (1/1) ... [2019-10-07 03:56:24,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:56:24,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:56:24,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:56:24,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:56:24,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:56:24" (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 03:56:24,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:56:24,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:56:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-07 03:56:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-07 03:56:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2019-10-07 03:56:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2019-10-07 03:56:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure create_tree [2019-10-07 03:56:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tree [2019-10-07 03:56:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:56:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:56:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-07 03:56:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-07 03:56:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-07 03:56:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-07 03:56:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-07 03:56:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-07 03:56:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-07 03:56:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-07 03:56:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-07 03:56:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-07 03:56:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-07 03:56:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-07 03:56:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-07 03:56:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-07 03:56:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-07 03:56:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-07 03:56:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-07 03:56:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-07 03:56:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-07 03:56:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-07 03:56:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-07 03:56:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-07 03:56:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-07 03:56:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-07 03:56:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-07 03:56:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-07 03:56:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-07 03:56:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-07 03:56:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-07 03:56:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-07 03:56:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-07 03:56:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-07 03:56:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-07 03:56:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-07 03:56:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-07 03:56:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-07 03:56:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-07 03:56:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-07 03:56:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-07 03:56:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-07 03:56:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-07 03:56:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-07 03:56:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-07 03:56:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-07 03:56:24,249 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-07 03:56:24,249 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-07 03:56:24,249 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-07 03:56:24,249 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-07 03:56:24,249 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-07 03:56:24,249 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-07 03:56:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-07 03:56:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-07 03:56:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 03:56:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-07 03:56:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-07 03:56:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 03:56:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-07 03:56:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-07 03:56:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-07 03:56:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-07 03:56:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-07 03:56:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-07 03:56:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-07 03:56:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:56:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-07 03:56:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-07 03:56:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-07 03:56:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-07 03:56:24,253 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-07 03:56:24,253 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-07 03:56:24,253 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-07 03:56:24,253 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-07 03:56:24,253 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-07 03:56:24,253 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-07 03:56:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-07 03:56:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-07 03:56:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-07 03:56:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-07 03:56:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-07 03:56:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-07 03:56:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-07 03:56:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-07 03:56:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-07 03:56:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-07 03:56:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-07 03:56:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-07 03:56:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-07 03:56:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-07 03:56:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-07 03:56:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-07 03:56:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-07 03:56:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-07 03:56:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-07 03:56:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-07 03:56:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-07 03:56:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-07 03:56:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-07 03:56:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-07 03:56:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-07 03:56:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-07 03:56:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-07 03:56:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-07 03:56:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:56:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2019-10-07 03:56:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2019-10-07 03:56:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 03:56:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 03:56:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure create_tree [2019-10-07 03:56:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 03:56:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 03:56:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 03:56:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure free_tree [2019-10-07 03:56:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 03:56:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:56:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:56:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:56:25,196 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:56:25,196 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-10-07 03:56:25,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:56:25 BoogieIcfgContainer [2019-10-07 03:56:25,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:56:25,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:56:25,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:56:25,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:56:25,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:56:23" (1/3) ... [2019-10-07 03:56:25,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3561e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:56:25, skipping insertion in model container [2019-10-07 03:56:25,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:56:24" (2/3) ... [2019-10-07 03:56:25,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3561e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:56:25, skipping insertion in model container [2019-10-07 03:56:25,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:56:25" (3/3) ... [2019-10-07 03:56:25,207 INFO L109 eAbstractionObserver]: Analyzing ICFG tree-4.i [2019-10-07 03:56:25,217 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:56:25,226 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:56:25,237 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:56:25,284 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:56:25,284 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:56:25,285 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:56:25,285 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:56:25,286 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:56:25,287 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:56:25,287 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:56:25,287 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:56:25,310 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2019-10-07 03:56:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-07 03:56:25,315 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:56:25,316 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:56:25,318 INFO L410 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:56:25,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:56:25,324 INFO L82 PathProgramCache]: Analyzing trace with hash 833824495, now seen corresponding path program 1 times [2019-10-07 03:56:25,333 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:56:25,334 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:56:25,334 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:56:25,334 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:56:25,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:56:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:56:25,520 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 03:56:25,521 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:56:25,522 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:56:25,523 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 03:56:25,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 03:56:25,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 03:56:25,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 03:56:25,545 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2019-10-07 03:56:25,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:56:25,584 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2019-10-07 03:56:25,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 03:56:25,586 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-07 03:56:25,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:56:25,597 INFO L225 Difference]: With dead ends: 79 [2019-10-07 03:56:25,597 INFO L226 Difference]: Without dead ends: 31 [2019-10-07 03:56:25,604 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 03:56:25,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-07 03:56:25,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-10-07 03:56:25,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-07 03:56:25,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-10-07 03:56:25,644 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 17 [2019-10-07 03:56:25,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:56:25,644 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-10-07 03:56:25,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 03:56:25,644 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-10-07 03:56:25,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-07 03:56:25,645 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:56:25,645 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:56:25,646 INFO L410 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:56:25,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:56:25,646 INFO L82 PathProgramCache]: Analyzing trace with hash -174511117, now seen corresponding path program 1 times [2019-10-07 03:56:25,646 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:56:25,646 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:56:25,647 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:56:25,647 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:56:25,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:56:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:56:25,807 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 03:56:25,808 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:56:25,808 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:56:25,808 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:56:25,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:56:25,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:56:25,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:56:25,811 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 6 states. [2019-10-07 03:56:25,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:56:25,979 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2019-10-07 03:56:25,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 03:56:25,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-10-07 03:56:25,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:56:25,985 INFO L225 Difference]: With dead ends: 56 [2019-10-07 03:56:25,985 INFO L226 Difference]: Without dead ends: 33 [2019-10-07 03:56:25,987 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 03:56:25,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-07 03:56:25,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-10-07 03:56:25,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-07 03:56:26,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2019-10-07 03:56:26,002 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 18 [2019-10-07 03:56:26,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:56:26,003 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2019-10-07 03:56:26,003 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:56:26,003 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2019-10-07 03:56:26,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-07 03:56:26,005 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:56:26,005 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:56:26,006 INFO L410 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:56:26,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:56:26,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1037557495, now seen corresponding path program 1 times [2019-10-07 03:56:26,007 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:56:26,007 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:56:26,007 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:56:26,007 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:56:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:56:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:56:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:56:26,099 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:56:26,099 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:56:26,099 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 03:56:26,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 03:56:26,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 03:56:26,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 03:56:26,101 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 3 states. [2019-10-07 03:56:26,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:56:26,172 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2019-10-07 03:56:26,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 03:56:26,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-10-07 03:56:26,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:56:26,174 INFO L225 Difference]: With dead ends: 55 [2019-10-07 03:56:26,175 INFO L226 Difference]: Without dead ends: 34 [2019-10-07 03:56:26,175 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 03:56:26,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-07 03:56:26,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-07 03:56:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-07 03:56:26,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-10-07 03:56:26,187 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 20 [2019-10-07 03:56:26,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:56:26,188 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-10-07 03:56:26,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 03:56:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-10-07 03:56:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-07 03:56:26,193 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:56:26,196 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:56:26,197 INFO L410 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:56:26,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:56:26,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1990611584, now seen corresponding path program 1 times [2019-10-07 03:56:26,197 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:56:26,198 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:56:26,198 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:56:26,198 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:56:26,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:56:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:56:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:56:26,385 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:56:26,386 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:56:26,386 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 03:56:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:56:26,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-07 03:56:26,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:56:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 03:56:26,568 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:56:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 03:56:26,651 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 03:56:26,651 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [9] total 9 [2019-10-07 03:56:26,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 03:56:26,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 03:56:26,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:56:26,657 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 8 states. [2019-10-07 03:56:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:56:26,795 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2019-10-07 03:56:26,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 03:56:26,796 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2019-10-07 03:56:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:56:26,797 INFO L225 Difference]: With dead ends: 47 [2019-10-07 03:56:26,798 INFO L226 Difference]: Without dead ends: 44 [2019-10-07 03:56:26,798 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-07 03:56:26,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-07 03:56:26,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2019-10-07 03:56:26,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-07 03:56:26,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-10-07 03:56:26,805 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 21 [2019-10-07 03:56:26,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:56:26,806 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-10-07 03:56:26,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 03:56:26,806 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-10-07 03:56:26,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-07 03:56:26,807 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:56:26,807 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:56:27,012 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:56:27,013 INFO L410 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:56:27,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:56:27,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1856453461, now seen corresponding path program 1 times [2019-10-07 03:56:27,014 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:56:27,014 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:56:27,015 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:56:27,015 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:56:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:56:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:56:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:56:27,489 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:56:27,489 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:56:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:56:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:56:27,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 45 conjunts are in the unsatisfiable core [2019-10-07 03:56:27,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:56:27,662 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-10-07 03:56:27,663 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 03:56:27,678 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 03:56:27,679 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-07 03:56:27,679 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-10-07 03:56:27,826 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 03:56:27,826 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-10-07 03:56:27,827 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 03:56:28,093 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2019-10-07 03:56:28,094 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 03:56:28,113 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_77|], 6=[|v_#memory_$Pointer$.base_83|, |v_#memory_$Pointer$.offset_83|], 13=[|v_#memory_$Pointer$.base_84|, |v_#memory_$Pointer$.offset_84|]} [2019-10-07 03:56:28,148 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-07 03:56:28,155 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 03:56:28,157 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 935 treesize of output 301 [2019-10-07 03:56:28,157 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-07 03:56:28,318 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2019-10-07 03:56:28,319 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 03:56:28,330 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-07 03:56:28,473 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2019-10-07 03:56:28,474 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 03:56:28,482 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-07 03:56:28,596 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-10-07 03:56:28,597 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 03:56:28,603 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 03:56:28,824 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-10-07 03:56:28,824 INFO L341 Elim1Store]: treesize reduction 939, result has 56.4 percent of original size [2019-10-07 03:56:28,826 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 587 treesize of output 1687 [2019-10-07 03:56:28,827 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-10-07 03:56:28,980 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-10-07 03:56:28,980 INFO L567 ElimStorePlain]: treesize reduction 1101, result has 34.9 percent of original size [2019-10-07 03:56:28,983 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 03:56:28,997 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 64 [2019-10-07 03:56:28,998 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-10-07 03:56:29,042 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 03:56:29,044 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 03:56:29,044 INFO L221 ElimStorePlain]: Needed 7 recursive calls to eliminate 7 variables, input treesize:3062, output treesize:93 [2019-10-07 03:56:29,387 INFO L392 ElimStorePlain]: Different costs {2=[|#memory_int|], 6=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|]} [2019-10-07 03:56:29,392 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-07 03:56:29,393 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2019-10-07 03:56:29,393 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 03:56:29,410 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 03:56:29,438 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 03:56:29,438 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 74 [2019-10-07 03:56:29,441 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:56:29,441 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:56:29,442 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:56:29,445 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:56:29,446 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:56:29,447 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:56:29,448 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-07 03:56:29,482 INFO L567 ElimStorePlain]: treesize reduction 36, result has 50.0 percent of original size [2019-10-07 03:56:29,485 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2019-10-07 03:56:29,486 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-07 03:56:29,491 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 03:56:29,492 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 03:56:29,492 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:110, output treesize:3 [2019-10-07 03:56:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:56:29,498 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:56:30,137 WARN L191 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2019-10-07 03:56:30,469 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-10-07 03:56:30,860 WARN L191 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-10-07 03:56:31,333 WARN L191 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-10-07 03:56:31,448 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_77|], 2=[|v_#memory_int_87|], 7=[|v_#memory_$Pointer$.base_83|, |v_#memory_$Pointer$.offset_83|], 13=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|]} [2019-10-07 03:56:31,600 INFO L341 Elim1Store]: treesize reduction 628, result has 49.5 percent of original size [2019-10-07 03:56:31,600 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 936 treesize of output 616 [2019-10-07 03:56:31,601 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-10-07 03:56:31,767 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2019-10-07 03:56:31,768 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 03:56:31,818 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 03:56:31,819 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 678 treesize of output 685 [2019-10-07 03:56:31,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:56:31,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:56:31,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:56:31,829 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2019-10-07 03:56:31,949 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2019-10-07 03:56:31,949 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 03:56:32,151 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:56:32,153 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:236) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:74) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:275) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 03:56:32,159 INFO L168 Benchmark]: Toolchain (without parser) took 8729.97 ms. Allocated memory was 137.4 MB in the beginning and 251.7 MB in the end (delta: 114.3 MB). Free memory was 100.9 MB in the beginning and 86.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 129.0 MB. Max. memory is 7.1 GB. [2019-10-07 03:56:32,161 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 03:56:32,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.12 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 100.7 MB in the beginning and 167.8 MB in the end (delta: -67.1 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2019-10-07 03:56:32,205 INFO L168 Benchmark]: Boogie Preprocessor took 88.88 ms. Allocated memory is still 201.9 MB. Free memory was 167.8 MB in the beginning and 164.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2019-10-07 03:56:32,206 INFO L168 Benchmark]: RCFGBuilder took 1024.40 ms. Allocated memory is still 201.9 MB. Free memory was 164.3 MB in the beginning and 90.1 MB in the end (delta: 74.2 MB). Peak memory consumption was 74.2 MB. Max. memory is 7.1 GB. [2019-10-07 03:56:32,208 INFO L168 Benchmark]: TraceAbstraction took 6957.08 ms. Allocated memory was 201.9 MB in the beginning and 251.7 MB in the end (delta: 49.8 MB). Free memory was 89.4 MB in the beginning and 86.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. [2019-10-07 03:56:32,220 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 655.12 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 100.7 MB in the beginning and 167.8 MB in the end (delta: -67.1 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.88 ms. Allocated memory is still 201.9 MB. Free memory was 167.8 MB in the beginning and 164.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1024.40 ms. Allocated memory is still 201.9 MB. Free memory was 164.3 MB in the beginning and 90.1 MB in the end (delta: 74.2 MB). Peak memory consumption was 74.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6957.08 ms. Allocated memory was 201.9 MB in the beginning and 251.7 MB in the end (delta: 49.8 MB). Free memory was 89.4 MB in the beginning and 86.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: expected NNF de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: expected NNF: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...