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-data/calendar.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:59:41,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:59:41,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:59:41,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:59:41,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:59:41,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:59:41,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:59:41,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:59:41,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:59:41,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:59:41,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:59:41,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:59:41,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:59:41,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:59:41,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:59:41,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:59:41,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:59:41,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:59:41,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:59:41,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:59:41,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:59:41,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:59:41,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:59:41,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:59:41,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:59:41,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:59:41,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:59:41,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:59:41,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:59:41,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:59:41,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:59:41,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:59:41,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:59:41,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:59:41,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:59:41,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:59:41,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:59:41,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:59:41,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:59:41,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:59:41,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:59:41,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:59:41,160 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:59:41,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:59:41,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:59:41,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:59:41,162 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:59:41,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:59:41,163 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:59:41,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:59:41,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:59:41,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:59:41,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:59:41,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:59:41,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:59:41,164 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:59:41,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:59:41,165 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:59:41,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:59:41,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:59:41,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:59:41,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:59:41,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:59:41,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:59:41,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:59:41,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:59:41,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:59:41,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:59:41,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:59:41,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:59:41,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 01:59:41,440 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:59:41,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:59:41,456 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:59:41,457 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:59:41,458 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:59:41,458 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/calendar.i [2019-10-15 01:59:41,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abe3626c3/adeb869c88e9450a82b2be4652ac5c22/FLAG8c1a29d69 [2019-10-15 01:59:42,079 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:59:42,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/calendar.i [2019-10-15 01:59:42,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abe3626c3/adeb869c88e9450a82b2be4652ac5c22/FLAG8c1a29d69 [2019-10-15 01:59:42,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abe3626c3/adeb869c88e9450a82b2be4652ac5c22 [2019-10-15 01:59:42,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:59:42,419 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:59:42,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:59:42,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:59:42,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:59:42,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:59:42" (1/1) ... [2019-10-15 01:59:42,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8f6405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:42, skipping insertion in model container [2019-10-15 01:59:42,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:59:42" (1/1) ... [2019-10-15 01:59:42,435 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:59:42,475 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:59:42,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:59:42,921 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:59:42,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:59:43,033 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:59:43,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:43 WrapperNode [2019-10-15 01:59:43,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:59:43,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:59:43,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:59:43,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:59:43,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:43" (1/1) ... [2019-10-15 01:59:43,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:43" (1/1) ... [2019-10-15 01:59:43,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:43" (1/1) ... [2019-10-15 01:59:43,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:43" (1/1) ... [2019-10-15 01:59:43,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:43" (1/1) ... [2019-10-15 01:59:43,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:43" (1/1) ... [2019-10-15 01:59:43,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:43" (1/1) ... [2019-10-15 01:59:43,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:59:43,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:59:43,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:59:43,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:59:43,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:59:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:59:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:59:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 01:59:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 01:59:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:59:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:59:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:59:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 01:59:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 01:59:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 01:59:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 01:59:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 01:59:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 01:59:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 01:59:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 01:59:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 01:59:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 01:59:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 01:59:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 01:59:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 01:59:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 01:59:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 01:59:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 01:59:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 01:59:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 01:59:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 01:59:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 01:59:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 01:59:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 01:59:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 01:59:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 01:59:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 01:59:43,197 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 01:59:43,197 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 01:59:43,197 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 01:59:43,197 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 01:59:43,197 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 01:59:43,197 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 01:59:43,198 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 01:59:43,198 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 01:59:43,198 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 01:59:43,198 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 01:59:43,198 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 01:59:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 01:59:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 01:59:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 01:59:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 01:59:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 01:59:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 01:59:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 01:59:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 01:59:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 01:59:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 01:59:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 01:59:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 01:59:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 01:59:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 01:59:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 01:59:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 01:59:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:59:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 01:59:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 01:59:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:59:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 01:59:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 01:59:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 01:59:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 01:59:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 01:59:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 01:59:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 01:59:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 01:59:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 01:59:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:59:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 01:59:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 01:59:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 01:59:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 01:59:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 01:59:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 01:59:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 01:59:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 01:59:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 01:59:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 01:59:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 01:59:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 01:59:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 01:59:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 01:59:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 01:59:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 01:59:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 01:59:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 01:59:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 01:59:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 01:59:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 01:59:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 01:59:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 01:59:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 01:59:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 01:59:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 01:59:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 01:59:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 01:59:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 01:59:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 01:59:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 01:59:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 01:59:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 01:59:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 01:59:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 01:59:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 01:59:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 01:59:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 01:59:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 01:59:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:59:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:59:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:59:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:59:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:59:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:59:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:59:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:59:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:59:43,854 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:59:43,855 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 01:59:43,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:59:43 BoogieIcfgContainer [2019-10-15 01:59:43,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:59:43,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:59:43,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:59:43,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:59:43,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:59:42" (1/3) ... [2019-10-15 01:59:43,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3949bb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:59:43, skipping insertion in model container [2019-10-15 01:59:43,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:43" (2/3) ... [2019-10-15 01:59:43,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3949bb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:59:43, skipping insertion in model container [2019-10-15 01:59:43,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:59:43" (3/3) ... [2019-10-15 01:59:43,865 INFO L109 eAbstractionObserver]: Analyzing ICFG calendar.i [2019-10-15 01:59:43,876 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:59:43,885 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:59:43,897 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:59:43,919 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:59:43,919 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:59:43,919 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:59:43,919 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:59:43,920 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:59:43,920 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:59:43,920 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:59:43,920 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:59:43,934 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-15 01:59:43,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:59:43,940 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:43,941 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:43,943 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:43,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:43,949 INFO L82 PathProgramCache]: Analyzing trace with hash -716872195, now seen corresponding path program 1 times [2019-10-15 01:59:43,957 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:43,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243234818] [2019-10-15 01:59:43,957 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:43,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:43,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:44,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:44,082 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243234818] [2019-10-15 01:59:44,083 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:59:44,083 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:59:44,084 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762858398] [2019-10-15 01:59:44,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:59:44,088 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:44,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:59:44,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:59:44,105 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-15 01:59:44,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:44,123 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2019-10-15 01:59:44,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:59:44,124 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 01:59:44,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:44,132 INFO L225 Difference]: With dead ends: 28 [2019-10-15 01:59:44,133 INFO L226 Difference]: Without dead ends: 16 [2019-10-15 01:59:44,136 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:59:44,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-15 01:59:44,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-15 01:59:44,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-15 01:59:44,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-10-15 01:59:44,170 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2019-10-15 01:59:44,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:44,170 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-10-15 01:59:44,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:59:44,171 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-10-15 01:59:44,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-15 01:59:44,172 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:44,172 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:44,172 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:44,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:44,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1133366258, now seen corresponding path program 1 times [2019-10-15 01:59:44,173 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:44,173 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544346406] [2019-10-15 01:59:44,173 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:44,174 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:44,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:44,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544346406] [2019-10-15 01:59:44,294 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:59:44,294 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:59:44,294 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563961566] [2019-10-15 01:59:44,296 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:59:44,296 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:44,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:59:44,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:59:44,297 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-10-15 01:59:44,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:44,360 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2019-10-15 01:59:44,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:59:44,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-10-15 01:59:44,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:44,362 INFO L225 Difference]: With dead ends: 28 [2019-10-15 01:59:44,362 INFO L226 Difference]: Without dead ends: 21 [2019-10-15 01:59:44,363 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:59:44,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-15 01:59:44,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-15 01:59:44,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-15 01:59:44,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2019-10-15 01:59:44,369 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 12 [2019-10-15 01:59:44,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:44,369 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2019-10-15 01:59:44,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:59:44,370 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2019-10-15 01:59:44,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-15 01:59:44,370 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:44,371 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:44,371 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:44,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:44,371 INFO L82 PathProgramCache]: Analyzing trace with hash 306471032, now seen corresponding path program 1 times [2019-10-15 01:59:44,371 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:44,372 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788640346] [2019-10-15 01:59:44,372 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:44,372 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:44,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:44,617 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788640346] [2019-10-15 01:59:44,618 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:59:44,618 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:59:44,618 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075352385] [2019-10-15 01:59:44,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:59:44,619 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:44,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:59:44,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:59:44,620 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand 5 states. [2019-10-15 01:59:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:44,773 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2019-10-15 01:59:44,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:59:44,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-10-15 01:59:44,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:44,774 INFO L225 Difference]: With dead ends: 26 [2019-10-15 01:59:44,774 INFO L226 Difference]: Without dead ends: 24 [2019-10-15 01:59:44,776 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:59:44,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-15 01:59:44,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-10-15 01:59:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-15 01:59:44,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2019-10-15 01:59:44,789 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 17 [2019-10-15 01:59:44,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:44,790 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2019-10-15 01:59:44,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:59:44,791 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2019-10-15 01:59:44,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-15 01:59:44,792 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:44,796 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:44,797 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:44,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:44,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1018023612, now seen corresponding path program 1 times [2019-10-15 01:59:44,798 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:44,798 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766026242] [2019-10-15 01:59:44,798 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:44,798 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:44,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:44,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766026242] [2019-10-15 01:59:44,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694901438] [2019-10-15 01:59:44,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:59:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:45,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-15 01:59:45,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:59:45,173 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 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-15 01:59:45,174 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:45,184 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:45,190 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 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-15 01:59:45,191 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:45,196 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:45,197 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:59:45,198 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2019-10-15 01:59:45,217 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-10-15 01:59:45,218 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:45,225 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:45,229 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-10-15 01:59:45,230 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:45,236 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:45,236 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:59:45,236 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2019-10-15 01:59:45,242 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:45,243 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:59:45,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:45,275 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [147451410] [2019-10-15 01:59:45,338 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-15 01:59:45,338 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:59:45,348 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:59:45,359 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:59:45,359 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:59:45,526 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 01:59:50,327 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2019-10-15 02:00:07,361 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2019-10-15 02:00:28,262 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 395