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 -i ../../../trunk/examples/svcomp/heap-data/packet_filter.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:08:52,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:08:52,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:08:52,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:08:52,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:08:52,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:08:52,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:08:52,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:08:52,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:08:52,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:08:52,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:08:52,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:08:52,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:08:52,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:08:52,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:08:52,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:08:52,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:08:52,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:08:52,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:08:52,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:08:52,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:08:52,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:08:52,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:08:52,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:08:52,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 18:08:52,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 18:08:52,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 18:08:52,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 18:08:52,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 18:08:52,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 18:08:52,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:08:52,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:08:52,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:08:52,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:08:52,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:08:52,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:08:52,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:08:52,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:08:52,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:08:52,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:08:52,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:08:52,110 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 [2019-10-13 18:08:52,133 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:08:52,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:08:52,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:08:52,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:08:52,137 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:08:52,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:08:52,138 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:08:52,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:08:52,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:08:52,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:08:52,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:08:52,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:08:52,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:08:52,139 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:08:52,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:08:52,140 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:08:52,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:08:52,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:08:52,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:08:52,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:08:52,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:08:52,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:08:52,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:08:52,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:08:52,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:08:52,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:08:52,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:08:52,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:08:52,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:08:52,420 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:08:52,439 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:08:52,443 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:08:52,445 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:08:52,445 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:08:52,446 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/packet_filter.i [2019-10-13 18:08:52,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b3c01e08/026f7ea314124e8c8ec6d73b8e0161be/FLAG1d55546a9 [2019-10-13 18:08:53,043 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:08:53,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/packet_filter.i [2019-10-13 18:08:53,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b3c01e08/026f7ea314124e8c8ec6d73b8e0161be/FLAG1d55546a9 [2019-10-13 18:08:53,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b3c01e08/026f7ea314124e8c8ec6d73b8e0161be [2019-10-13 18:08:53,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:08:53,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:08:53,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:08:53,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:08:53,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:08:53,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:08:53" (1/1) ... [2019-10-13 18:08:53,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77f3b670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:08:53, skipping insertion in model container [2019-10-13 18:08:53,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:08:53" (1/1) ... [2019-10-13 18:08:53,354 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:08:53,404 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:08:53,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:08:53,859 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:08:53,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:08:54,000 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:08:54,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:08:54 WrapperNode [2019-10-13 18:08:54,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:08:54,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:08:54,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:08:54,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:08:54,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:08:54" (1/1) ... [2019-10-13 18:08:54,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:08:54" (1/1) ... [2019-10-13 18:08:54,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:08:54" (1/1) ... [2019-10-13 18:08:54,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:08:54" (1/1) ... [2019-10-13 18:08:54,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:08:54" (1/1) ... [2019-10-13 18:08:54,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:08:54" (1/1) ... [2019-10-13 18:08:54,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:08:54" (1/1) ... [2019-10-13 18:08:54,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:08:54,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:08:54,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:08:54,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:08:54,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:08:54" (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 [2019-10-13 18:08:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:08:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:08:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 18:08:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 18:08:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure receive [2019-10-13 18:08:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure send [2019-10-13 18:08:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2019-10-13 18:08:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure process_prio_queue [2019-10-13 18:08:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure process_normal_queue [2019-10-13 18:08:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:08:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 18:08:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:08:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2019-10-13 18:08:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:08:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 18:08:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 18:08:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 18:08:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 18:08:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 18:08:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 18:08:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 18:08:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 18:08:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 18:08:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 18:08:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 18:08:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 18:08:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 18:08:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 18:08:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 18:08:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 18:08:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 18:08:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 18:08:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 18:08:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 18:08:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 18:08:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 18:08:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 18:08:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 18:08:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 18:08:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 18:08:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 18:08:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 18:08:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 18:08:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 18:08:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 18:08:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 18:08:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 18:08:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 18:08:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 18:08:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 18:08:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 18:08:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 18:08:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 18:08:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 18:08:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 18:08:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 18:08:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 18:08:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 18:08:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 18:08:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 18:08:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 18:08:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 18:08:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 18:08:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 18:08:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 18:08:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 18:08:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 18:08:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 18:08:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 18:08:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 18:08:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 18:08:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 18:08:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 18:08:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 18:08:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 18:08:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 18:08:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 18:08:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 18:08:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 18:08:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:08:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 18:08:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 18:08:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 18:08:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 18:08:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 18:08:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 18:08:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 18:08:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 18:08:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 18:08:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 18:08:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 18:08:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 18:08:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 18:08:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 18:08:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 18:08:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 18:08:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 18:08:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 18:08:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 18:08:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 18:08:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 18:08:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 18:08:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 18:08:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 18:08:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 18:08:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 18:08:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 18:08:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 18:08:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 18:08:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 18:08:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 18:08:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 18:08:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 18:08:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 18:08:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 18:08:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 18:08:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 18:08:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 18:08:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 18:08:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure receive [2019-10-13 18:08:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 18:08:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 18:08:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 18:08:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 18:08:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 18:08:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 18:08:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure send [2019-10-13 18:08:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2019-10-13 18:08:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 18:08:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure process_prio_queue [2019-10-13 18:08:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure process_normal_queue [2019-10-13 18:08:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:08:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 18:08:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 18:08:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:08:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:08:54,865 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:08:54,866 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 18:08:54,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:08:54 BoogieIcfgContainer [2019-10-13 18:08:54,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:08:54,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:08:54,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:08:54,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:08:54,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:08:53" (1/3) ... [2019-10-13 18:08:54,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e01b0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:08:54, skipping insertion in model container [2019-10-13 18:08:54,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:08:54" (2/3) ... [2019-10-13 18:08:54,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e01b0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:08:54, skipping insertion in model container [2019-10-13 18:08:54,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:08:54" (3/3) ... [2019-10-13 18:08:54,877 INFO L109 eAbstractionObserver]: Analyzing ICFG packet_filter.i [2019-10-13 18:08:54,888 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:08:54,896 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-13 18:08:54,909 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-13 18:08:54,936 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:08:54,936 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:08:54,937 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:08:54,937 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:08:54,937 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:08:54,937 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:08:54,938 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:08:54,938 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:08:54,957 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2019-10-13 18:08:54,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 18:08:54,963 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:08:54,964 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:08:54,966 INFO L410 AbstractCegarLoop]: === Iteration 1 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:08:54,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:08:54,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1068933411, now seen corresponding path program 1 times [2019-10-13 18:08:54,979 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:08:54,979 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622004180] [2019-10-13 18:08:54,980 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:08:54,980 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:08:54,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:08:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:08:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:08:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:08:55,201 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622004180] [2019-10-13 18:08:55,201 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:08:55,202 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 18:08:55,202 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158092329] [2019-10-13 18:08:55,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:08:55,206 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:08:55,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:08:55,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 18:08:55,218 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 3 states. [2019-10-13 18:08:55,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:08:55,429 INFO L93 Difference]: Finished difference Result 100 states and 126 transitions. [2019-10-13 18:08:55,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:08:55,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-13 18:08:55,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:08:55,439 INFO L225 Difference]: With dead ends: 100 [2019-10-13 18:08:55,440 INFO L226 Difference]: Without dead ends: 57 [2019-10-13 18:08:55,443 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 18:08:55,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-13 18:08:55,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-10-13 18:08:55,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-13 18:08:55,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2019-10-13 18:08:55,487 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 14 [2019-10-13 18:08:55,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:08:55,487 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2019-10-13 18:08:55,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:08:55,488 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2019-10-13 18:08:55,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 18:08:55,489 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:08:55,489 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:08:55,489 INFO L410 AbstractCegarLoop]: === Iteration 2 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:08:55,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:08:55,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1316192133, now seen corresponding path program 1 times [2019-10-13 18:08:55,490 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:08:55,490 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131100243] [2019-10-13 18:08:55,491 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:08:55,491 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:08:55,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:08:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:08:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:08:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:08:55,575 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131100243] [2019-10-13 18:08:55,575 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:08:55,576 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:08:55,576 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638485340] [2019-10-13 18:08:55,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 18:08:55,578 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:08:55,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 18:08:55,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 18:08:55,579 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 4 states. [2019-10-13 18:08:55,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:08:55,831 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2019-10-13 18:08:55,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 18:08:55,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-13 18:08:55,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:08:55,834 INFO L225 Difference]: With dead ends: 60 [2019-10-13 18:08:55,835 INFO L226 Difference]: Without dead ends: 58 [2019-10-13 18:08:55,837 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:08:55,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-13 18:08:55,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2019-10-13 18:08:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-13 18:08:55,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2019-10-13 18:08:55,859 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 15 [2019-10-13 18:08:55,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:08:55,860 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2019-10-13 18:08:55,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 18:08:55,862 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2019-10-13 18:08:55,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 18:08:55,863 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:08:55,864 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:08:55,864 INFO L410 AbstractCegarLoop]: === Iteration 3 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:08:55,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:08:55,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1316190211, now seen corresponding path program 1 times [2019-10-13 18:08:55,865 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:08:55,867 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022589016] [2019-10-13 18:08:55,867 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:08:55,867 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:08:55,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:08:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:08:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:08:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:08:56,087 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022589016] [2019-10-13 18:08:56,087 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:08:56,087 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 18:08:56,088 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162602166] [2019-10-13 18:08:56,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 18:08:56,088 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:08:56,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 18:08:56,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:08:56,089 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 7 states. [2019-10-13 18:08:56,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:08:56,630 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2019-10-13 18:08:56,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 18:08:56,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-10-13 18:08:56,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:08:56,634 INFO L225 Difference]: With dead ends: 95 [2019-10-13 18:08:56,635 INFO L226 Difference]: Without dead ends: 68 [2019-10-13 18:08:56,636 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:08:56,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-10-13 18:08:56,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2019-10-13 18:08:56,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-10-13 18:08:56,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2019-10-13 18:08:56,658 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 15 [2019-10-13 18:08:56,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:08:56,658 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2019-10-13 18:08:56,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 18:08:56,659 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2019-10-13 18:08:56,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-13 18:08:56,660 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:08:56,660 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:08:56,661 INFO L410 AbstractCegarLoop]: === Iteration 4 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:08:56,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:08:56,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1729106577, now seen corresponding path program 1 times [2019-10-13 18:08:56,662 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:08:56,662 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703179485] [2019-10-13 18:08:56,662 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:08:56,662 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:08:56,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:08:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:08:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:08:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:08:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:08:56,893 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703179485] [2019-10-13 18:08:56,893 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:08:56,893 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 18:08:56,893 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298886423] [2019-10-13 18:08:56,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:08:56,897 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:08:56,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:08:56,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:08:56,898 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 9 states. [2019-10-13 18:08:57,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:08:57,634 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2019-10-13 18:08:57,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 18:08:57,634 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2019-10-13 18:08:57,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:08:57,635 INFO L225 Difference]: With dead ends: 100 [2019-10-13 18:08:57,636 INFO L226 Difference]: Without dead ends: 78 [2019-10-13 18:08:57,636 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:08:57,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-10-13 18:08:57,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 60. [2019-10-13 18:08:57,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-10-13 18:08:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2019-10-13 18:08:57,648 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 21 [2019-10-13 18:08:57,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:08:57,649 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2019-10-13 18:08:57,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:08:57,649 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2019-10-13 18:08:57,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-13 18:08:57,650 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:08:57,650 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:08:57,650 INFO L410 AbstractCegarLoop]: === Iteration 5 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:08:57,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:08:57,651 INFO L82 PathProgramCache]: Analyzing trace with hash 453892566, now seen corresponding path program 1 times [2019-10-13 18:08:57,651 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:08:57,651 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205995577] [2019-10-13 18:08:57,651 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:08:57,652 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:08:57,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:08:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:08:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:08:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:08:58,188 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-10-13 18:08:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:08:58,194 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205995577] [2019-10-13 18:08:58,195 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064308032] [2019-10-13 18:08:58,195 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 [2019-10-13 18:08:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:08:58,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 41 conjunts are in the unsatisfiable core [2019-10-13 18:08:58,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:08:58,433 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-10-13 18:08:58,433 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2019-10-13 18:08:58,434 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 18:08:58,445 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:08:58,447 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 18:08:58,448 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:29 [2019-10-13 18:08:58,534 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:08:58,534 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2019-10-13 18:08:58,536 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 18:08:58,577 INFO L567 ElimStorePlain]: treesize reduction 28, result has 60.0 percent of original size [2019-10-13 18:08:58,578 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-13 18:08:58,579 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:42 [2019-10-13 18:08:58,719 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 18:08:58,759 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:08:58,764 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 18:08:58,792 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:08:58,798 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 18:08:58,815 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:08:58,819 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 18:08:58,831 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:08:58,833 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-10-13 18:08:58,833 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:100, output treesize:48 [2019-10-13 18:09:00,943 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:00,944 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 37 [2019-10-13 18:09:00,945 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 18:09:00,977 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:00,993 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 18:09:00,995 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 18:09:00,997 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 18:09:00,999 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 36 [2019-10-13 18:09:01,000 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 18:09:01,042 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:01,062 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 18:09:01,063 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 18:09:01,064 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 18:09:01,068 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 36 [2019-10-13 18:09:01,069 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-13 18:09:01,100 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:01,102 INFO L496 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 18:09:01,103 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 13 variables, input treesize:89, output treesize:15 [2019-10-13 18:09:01,110 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 [2019-10-13 18:09:01,110 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 18:09:01,116 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:01,119 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 [2019-10-13 18:09:01,120 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 18:09:01,124 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:01,124 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 18:09:01,125 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2019-10-13 18:09:01,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:09:01,133 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:09:01,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2019-10-13 18:09:01,133 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655352491] [2019-10-13 18:09:01,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 18:09:01,134 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:09:01,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 18:09:01,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=198, Unknown=1, NotChecked=0, Total=240 [2019-10-13 18:09:01,135 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 16 states. [2019-10-13 18:09:03,645 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-10-13 18:09:04,069 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2019-10-13 18:09:17,465 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-10-13 18:09:18,223 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2019-10-13 18:09:18,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:09:18,989 INFO L93 Difference]: Finished difference Result 145 states and 180 transitions. [2019-10-13 18:09:18,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 18:09:18,990 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 26 [2019-10-13 18:09:18,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:09:18,993 INFO L225 Difference]: With dead ends: 145 [2019-10-13 18:09:18,993 INFO L226 Difference]: Without dead ends: 118 [2019-10-13 18:09:18,994 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=120, Invalid=580, Unknown=2, NotChecked=0, Total=702 [2019-10-13 18:09:18,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-10-13 18:09:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 72. [2019-10-13 18:09:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-10-13 18:09:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2019-10-13 18:09:19,010 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 26 [2019-10-13 18:09:19,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:09:19,010 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2019-10-13 18:09:19,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 18:09:19,010 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2019-10-13 18:09:19,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 18:09:19,012 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:09:19,012 INFO L380 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, 1, 1, 1, 1, 1, 1] [2019-10-13 18:09:19,217 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:09:19,218 INFO L410 AbstractCegarLoop]: === Iteration 6 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:09:19,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:09:19,219 INFO L82 PathProgramCache]: Analyzing trace with hash -845629304, now seen corresponding path program 1 times [2019-10-13 18:09:19,219 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:09:19,219 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816202257] [2019-10-13 18:09:19,220 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:09:19,220 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:09:19,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:09:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:09:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:09:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:09:19,732 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-10-13 18:09:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:09:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:09:19,788 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816202257] [2019-10-13 18:09:19,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383820256] [2019-10-13 18:09:19,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:09:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:09:19,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 41 conjunts are in the unsatisfiable core [2019-10-13 18:09:19,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:09:19,938 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-10-13 18:09:19,939 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2019-10-13 18:09:19,939 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 18:09:19,948 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:19,949 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 18:09:19,950 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:25 [2019-10-13 18:09:19,974 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:19,975 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2019-10-13 18:09:19,975 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 18:09:19,999 INFO L567 ElimStorePlain]: treesize reduction 14, result has 64.1 percent of original size [2019-10-13 18:09:20,000 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 18:09:20,000 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:25 [2019-10-13 18:09:20,108 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 18:09:20,155 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:20,159 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 18:09:20,192 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:20,196 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 18:09:20,220 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:20,224 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 18:09:20,242 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:20,243 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-10-13 18:09:20,243 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:100, output treesize:48 [2019-10-13 18:09:22,367 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:22,367 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-10-13 18:09:22,368 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 18:09:22,390 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:22,398 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 18:09:22,399 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 18:09:22,401 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 18:09:22,403 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 36 [2019-10-13 18:09:22,404 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 18:09:22,425 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:22,431 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 18:09:22,432 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 18:09:22,433 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 18:09:22,435 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 36 [2019-10-13 18:09:22,436 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-13 18:09:22,461 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:22,463 INFO L496 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 18:09:22,463 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 11 variables, input treesize:67, output treesize:15 [2019-10-13 18:09:22,477 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 [2019-10-13 18:09:22,478 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 18:09:22,484 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:22,486 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 [2019-10-13 18:09:22,486 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 18:09:22,490 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 18:09:22,491 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 18:09:22,491 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2019-10-13 18:09:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:09:22,497 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:09:22,497 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 16 [2019-10-13 18:09:22,497 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118735480] [2019-10-13 18:09:22,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 18:09:22,498 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:09:22,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 18:09:22,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=198, Unknown=1, NotChecked=0, Total=240 [2019-10-13 18:09:22,498 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 16 states. [2019-10-13 18:09:39,768 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-10-13 18:09:40,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:09:40,986 INFO L93 Difference]: Finished difference Result 132 states and 163 transitions. [2019-10-13 18:09:40,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 18:09:40,988 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2019-10-13 18:09:40,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:09:40,990 INFO L225 Difference]: With dead ends: 132 [2019-10-13 18:09:40,990 INFO L226 Difference]: Without dead ends: 110 [2019-10-13 18:09:40,991 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=98, Invalid=452, Unknown=2, NotChecked=0, Total=552 [2019-10-13 18:09:40,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-10-13 18:09:41,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 66. [2019-10-13 18:09:41,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-10-13 18:09:41,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2019-10-13 18:09:41,011 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 32 [2019-10-13 18:09:41,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:09:41,012 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2019-10-13 18:09:41,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 18:09:41,012 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2019-10-13 18:09:41,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 18:09:41,013 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:09:41,013 INFO L380 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, 1, 1, 1, 1, 1, 1] [2019-10-13 18:09:41,225 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:09:41,226 INFO L410 AbstractCegarLoop]: === Iteration 7 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:09:41,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:09:41,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1958551269, now seen corresponding path program 1 times [2019-10-13 18:09:41,227 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:09:41,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436038608] [2019-10-13 18:09:41,228 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:09:41,228 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:09:41,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:09:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:09:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:09:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:09:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:09:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:09:41,423 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436038608] [2019-10-13 18:09:41,423 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:09:41,424 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 18:09:41,424 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936753587] [2019-10-13 18:09:41,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states