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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/heap-data/packet_filter.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:07:23,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:07:23,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:07:23,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:07:23,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:07:23,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:07:23,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:07:23,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:07:23,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:07:23,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:07:23,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:07:23,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:07:23,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:07:23,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:07:23,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:07:23,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:07:23,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:07:23,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:07:23,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:07:23,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:07:23,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:07:23,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:07:23,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:07:23,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:07:23,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:07:23,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:07:23,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:07:23,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:07:23,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:07:23,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:07:23,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:07:23,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:07:23,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:07:23,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:07:23,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:07:23,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:07:23,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:07:23,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:07:23,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:07:23,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:07:23,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:07:23,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-16 17:07:23,342 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:07:23,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:07:23,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:07:23,343 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:07:23,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:07:23,344 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:07:23,344 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:07:23,344 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:07:23,344 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:07:23,345 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:07:23,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:07:23,345 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:07:23,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:07:23,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:07:23,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:07:23,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:07:23,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:07:23,347 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:07:23,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:07:23,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:07:23,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:07:23,348 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:07:23,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:07:23,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:07:23,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:07:23,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:07:23,349 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:07:23,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:07:23,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:07:23,349 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:07:23,377 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:07:23,389 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:07:23,392 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:07:23,393 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:07:23,394 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:07:23,394 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/packet_filter.i [2019-09-16 17:07:23,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/536219e49/7242c3c95e2149199fab93db21804f6d/FLAGfa44844c6 [2019-09-16 17:07:24,063 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:07:24,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/packet_filter.i [2019-09-16 17:07:24,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/536219e49/7242c3c95e2149199fab93db21804f6d/FLAGfa44844c6 [2019-09-16 17:07:24,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/536219e49/7242c3c95e2149199fab93db21804f6d [2019-09-16 17:07:24,328 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:07:24,330 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:07:24,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:07:24,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:07:24,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:07:24,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:07:24" (1/1) ... [2019-09-16 17:07:24,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b11f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:24, skipping insertion in model container [2019-09-16 17:07:24,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:07:24" (1/1) ... [2019-09-16 17:07:24,352 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:07:24,398 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:07:24,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:07:24,839 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:07:24,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:07:24,960 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:07:24,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:24 WrapperNode [2019-09-16 17:07:24,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:07:24,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:07:24,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:07:24,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:07:24,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:24" (1/1) ... [2019-09-16 17:07:24,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:24" (1/1) ... [2019-09-16 17:07:24,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:24" (1/1) ... [2019-09-16 17:07:24,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:24" (1/1) ... [2019-09-16 17:07:25,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:24" (1/1) ... [2019-09-16 17:07:25,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:24" (1/1) ... [2019-09-16 17:07:25,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:24" (1/1) ... [2019-09-16 17:07:25,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:07:25,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:07:25,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:07:25,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:07:25,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:24" (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 [2019-09-16 17:07:25,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:07:25,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:07:25,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-16 17:07:25,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-16 17:07:25,121 INFO L138 BoogieDeclarations]: Found implementation of procedure receive [2019-09-16 17:07:25,121 INFO L138 BoogieDeclarations]: Found implementation of procedure send [2019-09-16 17:07:25,121 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2019-09-16 17:07:25,121 INFO L138 BoogieDeclarations]: Found implementation of procedure process_prio_queue [2019-09-16 17:07:25,122 INFO L138 BoogieDeclarations]: Found implementation of procedure process_normal_queue [2019-09-16 17:07:25,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:07:25,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-16 17:07:25,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:07:25,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2019-09-16 17:07:25,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:07:25,123 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-16 17:07:25,123 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-16 17:07:25,123 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-16 17:07:25,123 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-16 17:07:25,123 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-16 17:07:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-16 17:07:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-16 17:07:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-16 17:07:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-16 17:07:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-16 17:07:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-16 17:07:25,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-16 17:07:25,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-16 17:07:25,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-16 17:07:25,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-16 17:07:25,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-16 17:07:25,125 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-16 17:07:25,126 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-16 17:07:25,126 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-16 17:07:25,126 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-16 17:07:25,126 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-16 17:07:25,126 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-16 17:07:25,126 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-16 17:07:25,126 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-16 17:07:25,127 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-16 17:07:25,127 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-16 17:07:25,127 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-16 17:07:25,127 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-16 17:07:25,127 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-16 17:07:25,127 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-16 17:07:25,128 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-16 17:07:25,128 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-16 17:07:25,128 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-16 17:07:25,128 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-16 17:07:25,128 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-16 17:07:25,128 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-16 17:07:25,128 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-16 17:07:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-16 17:07:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-16 17:07:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-16 17:07:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-16 17:07:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-16 17:07:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-16 17:07:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-16 17:07:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-16 17:07:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-16 17:07:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-16 17:07:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-16 17:07:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-16 17:07:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-16 17:07:25,131 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-16 17:07:25,131 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-16 17:07:25,131 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:07:25,131 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-16 17:07:25,131 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-16 17:07:25,131 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:07:25,132 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-16 17:07:25,132 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-16 17:07:25,132 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-16 17:07:25,132 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-16 17:07:25,132 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-16 17:07:25,132 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-16 17:07:25,133 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-16 17:07:25,133 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-16 17:07:25,133 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-16 17:07:25,133 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-16 17:07:25,133 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-16 17:07:25,133 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-16 17:07:25,134 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-16 17:07:25,134 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-16 17:07:25,134 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-16 17:07:25,134 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-16 17:07:25,134 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-16 17:07:25,134 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-16 17:07:25,135 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-16 17:07:25,135 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-16 17:07:25,135 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-16 17:07:25,135 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-16 17:07:25,135 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-16 17:07:25,135 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-16 17:07:25,135 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-16 17:07:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-16 17:07:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-16 17:07:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-16 17:07:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-16 17:07:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-16 17:07:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-16 17:07:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-16 17:07:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-16 17:07:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-16 17:07:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-16 17:07:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-16 17:07:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-16 17:07:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-16 17:07:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-16 17:07:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-16 17:07:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-16 17:07:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-16 17:07:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-16 17:07:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-16 17:07:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-16 17:07:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-16 17:07:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-16 17:07:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-16 17:07:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-16 17:07:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure receive [2019-09-16 17:07:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:07:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:07:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:07:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:07:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:07:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:07:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure send [2019-09-16 17:07:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2019-09-16 17:07:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:07:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure process_prio_queue [2019-09-16 17:07:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure process_normal_queue [2019-09-16 17:07:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:07:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-16 17:07:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:07:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:07:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:07:25,869 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:07:25,869 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-16 17:07:25,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:07:25 BoogieIcfgContainer [2019-09-16 17:07:25,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:07:25,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:07:25,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:07:25,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:07:25,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:07:24" (1/3) ... [2019-09-16 17:07:25,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107c43ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:07:25, skipping insertion in model container [2019-09-16 17:07:25,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:24" (2/3) ... [2019-09-16 17:07:25,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107c43ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:07:25, skipping insertion in model container [2019-09-16 17:07:25,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:07:25" (3/3) ... [2019-09-16 17:07:25,880 INFO L109 eAbstractionObserver]: Analyzing ICFG packet_filter.i [2019-09-16 17:07:25,890 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:07:25,897 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-09-16 17:07:25,909 INFO L252 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-09-16 17:07:25,930 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:07:25,930 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:07:25,930 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:07:25,931 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:07:25,931 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:07:25,931 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:07:25,931 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:07:25,931 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:07:25,948 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2019-09-16 17:07:25,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-16 17:07:25,959 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:25,960 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:25,963 INFO L418 AbstractCegarLoop]: === Iteration 1 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:25,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:25,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1068933411, now seen corresponding path program 1 times [2019-09-16 17:07:25,971 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:26,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:26,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:26,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:26,040 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:26,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:07:26,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:26,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:07:26,133 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:26,138 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:07:26,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:07:26,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:07:26,157 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 2 states. [2019-09-16 17:07:26,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:26,181 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2019-09-16 17:07:26,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:07:26,183 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-16 17:07:26,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:26,193 INFO L225 Difference]: With dead ends: 64 [2019-09-16 17:07:26,194 INFO L226 Difference]: Without dead ends: 57 [2019-09-16 17:07:26,196 INFO L636 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 [2019-09-16 17:07:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-09-16 17:07:26,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-09-16 17:07:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-09-16 17:07:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2019-09-16 17:07:26,247 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 14 [2019-09-16 17:07:26,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:26,247 INFO L475 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2019-09-16 17:07:26,247 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:07:26,248 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2019-09-16 17:07:26,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-16 17:07:26,249 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:26,249 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:26,249 INFO L418 AbstractCegarLoop]: === Iteration 2 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:26,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:26,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1316192133, now seen corresponding path program 1 times [2019-09-16 17:07:26,250 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:26,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:26,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:26,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:26,256 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:07:26,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:26,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:07:26,420 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:26,423 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:07:26,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:07:26,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:07:26,424 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 3 states. [2019-09-16 17:07:26,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:26,456 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2019-09-16 17:07:26,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:07:26,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-09-16 17:07:26,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:26,461 INFO L225 Difference]: With dead ends: 58 [2019-09-16 17:07:26,461 INFO L226 Difference]: Without dead ends: 58 [2019-09-16 17:07:26,462 INFO L636 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 [2019-09-16 17:07:26,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-09-16 17:07:26,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2019-09-16 17:07:26,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-09-16 17:07:26,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2019-09-16 17:07:26,485 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 15 [2019-09-16 17:07:26,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:26,485 INFO L475 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2019-09-16 17:07:26,485 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:07:26,485 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2019-09-16 17:07:26,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-16 17:07:26,486 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:26,487 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:26,487 INFO L418 AbstractCegarLoop]: === Iteration 3 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:26,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:26,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1316190211, now seen corresponding path program 1 times [2019-09-16 17:07:26,488 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:26,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:26,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:26,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:26,497 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:07:26,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:26,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:07:26,649 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:26,650 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:07:26,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:07:26,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:07:26,651 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 6 states. [2019-09-16 17:07:26,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:26,841 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2019-09-16 17:07:26,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:07:26,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-09-16 17:07:26,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:26,844 INFO L225 Difference]: With dead ends: 68 [2019-09-16 17:07:26,844 INFO L226 Difference]: Without dead ends: 68 [2019-09-16 17:07:26,845 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:07:26,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-09-16 17:07:26,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2019-09-16 17:07:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-09-16 17:07:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2019-09-16 17:07:26,856 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 15 [2019-09-16 17:07:26,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:26,856 INFO L475 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2019-09-16 17:07:26,856 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:07:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2019-09-16 17:07:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-16 17:07:26,860 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:26,860 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:26,860 INFO L418 AbstractCegarLoop]: === Iteration 4 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:26,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:26,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1729106577, now seen corresponding path program 1 times [2019-09-16 17:07:26,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:26,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:26,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:26,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:26,866 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:27,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:07:27,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:27,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:07:27,030 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:27,030 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:07:27,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:07:27,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:07:27,031 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 7 states. [2019-09-16 17:07:27,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:27,572 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2019-09-16 17:07:27,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:07:27,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-09-16 17:07:27,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:27,574 INFO L225 Difference]: With dead ends: 88 [2019-09-16 17:07:27,574 INFO L226 Difference]: Without dead ends: 78 [2019-09-16 17:07:27,575 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-09-16 17:07:27,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-09-16 17:07:27,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 60. [2019-09-16 17:07:27,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-09-16 17:07:27,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2019-09-16 17:07:27,582 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 21 [2019-09-16 17:07:27,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:27,582 INFO L475 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2019-09-16 17:07:27,582 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:07:27,583 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2019-09-16 17:07:27,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-16 17:07:27,584 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:27,584 INFO L407 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] [2019-09-16 17:07:27,584 INFO L418 AbstractCegarLoop]: === Iteration 5 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:27,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:27,585 INFO L82 PathProgramCache]: Analyzing trace with hash 453892566, now seen corresponding path program 1 times [2019-09-16 17:07:27,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:27,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:27,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:27,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:27,589 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:28,064 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-09-16 17:07:28,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:07:28,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:07:28,141 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:07:28,142 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2019-09-16 17:07:28,144 INFO L207 CegarAbsIntRunner]: [2], [5], [9], [10], [11], [19], [24], [28], [29], [43], [44], [47], [52], [55], [57], [59], [81], [83], [87], [134], [135], [142], [148], [149], [150] [2019-09-16 17:07:28,198 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:07:28,199 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:07:28,258 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:07:28,260 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 19 root evaluator evaluations with a maximum evaluation depth of 0. Performed 19 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 30 variables. [2019-09-16 17:07:28,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:28,265 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:07:28,304 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-16 17:07:28,305 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:07:28,307 INFO L420 sIntCurrentIteration]: We unified 25 AI predicates to 25 [2019-09-16 17:07:28,307 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:07:28,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:07:28,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 10 [2019-09-16 17:07:28,308 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:28,309 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:07:28,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:07:28,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:07:28,309 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 2 states. [2019-09-16 17:07:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:28,310 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-16 17:07:28,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:07:28,311 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2019-09-16 17:07:28,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:28,311 INFO L225 Difference]: With dead ends: 6 [2019-09-16 17:07:28,311 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:07:28,312 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:07:28,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:07:28,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:07:28,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:07:28,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:07:28,313 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2019-09-16 17:07:28,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:28,313 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:07:28,313 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:07:28,314 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:07:28,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:07:28,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:07:28 BoogieIcfgContainer [2019-09-16 17:07:28,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:07:28,321 INFO L168 Benchmark]: Toolchain (without parser) took 3991.15 ms. Allocated memory was 132.1 MB in the beginning and 221.8 MB in the end (delta: 89.7 MB). Free memory was 86.2 MB in the beginning and 70.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 105.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:28,322 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 132.1 MB. Free memory was 106.3 MB in the beginning and 106.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:07:28,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.95 ms. Allocated memory was 132.1 MB in the beginning and 199.8 MB in the end (delta: 67.6 MB). Free memory was 86.0 MB in the beginning and 161.9 MB in the end (delta: -75.9 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:28,325 INFO L168 Benchmark]: Boogie Preprocessor took 96.80 ms. Allocated memory is still 199.8 MB. Free memory was 161.9 MB in the beginning and 157.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:28,325 INFO L168 Benchmark]: RCFGBuilder took 812.43 ms. Allocated memory is still 199.8 MB. Free memory was 157.7 MB in the beginning and 99.2 MB in the end (delta: 58.6 MB). Peak memory consumption was 58.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:28,327 INFO L168 Benchmark]: TraceAbstraction took 2447.45 ms. Allocated memory was 199.8 MB in the beginning and 221.8 MB in the end (delta: 22.0 MB). Free memory was 99.2 MB in the beginning and 70.5 MB in the end (delta: 28.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:28,331 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 132.1 MB. Free memory was 106.3 MB in the beginning and 106.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 629.95 ms. Allocated memory was 132.1 MB in the beginning and 199.8 MB in the end (delta: 67.6 MB). Free memory was 86.0 MB in the beginning and 161.9 MB in the end (delta: -75.9 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.80 ms. Allocated memory is still 199.8 MB. Free memory was 161.9 MB in the beginning and 157.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 812.43 ms. Allocated memory is still 199.8 MB. Free memory was 157.7 MB in the beginning and 99.2 MB in the end (delta: 58.6 MB). Peak memory consumption was 58.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2447.45 ms. Allocated memory was 199.8 MB in the beginning and 221.8 MB in the end (delta: 22.0 MB). Free memory was 99.2 MB in the beginning and 70.5 MB in the end (delta: 28.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 588]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 595]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 70 locations, 2 error locations. SAFE Result, 2.3s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 275 SDtfs, 35 SDslu, 562 SDs, 0 SdLazy, 138 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.96 AbsIntWeakeningRatio, 1.64 AbsIntAvgWeakeningVarsNumRemoved, 0.24 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 34216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...