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/array-examples/relax-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:26:57,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:26:57,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:26:57,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 05:26:57,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 05:26:57,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 05:26:57,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 05:26:57,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 05:26:57,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 05:26:57,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 05:26:57,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 05:26:57,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 05:26:57,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 05:26:57,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 05:26:57,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 05:26:57,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 05:26:57,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 05:26:57,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 05:26:57,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 05:26:57,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 05:26:57,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 05:26:57,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 05:26:57,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 05:26:57,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 05:26:57,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-09 05:26:57,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-09 05:26:57,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-09 05:26:57,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-09 05:26:57,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-09 05:26:57,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-09 05:26:57,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:26:57,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:26:57,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:26:57,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:26:57,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:26:57,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:26:57,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:26:57,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:26:57,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:26:57,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:26:57,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:26:57,286 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 [2019-09-09 05:26:57,305 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:26:57,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:26:57,306 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:26:57,307 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:26:57,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:26:57,307 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:26:57,308 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:26:57,308 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:26:57,308 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:26:57,308 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:26:57,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:26:57,310 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:26:57,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:26:57,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:26:57,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:26:57,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:26:57,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:26:57,312 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:26:57,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:26:57,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:26:57,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:26:57,312 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:26:57,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:26:57,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:26:57,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:26:57,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:26:57,314 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:26:57,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:26:57,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:26:57,314 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:26:57,362 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:26:57,378 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:26:57,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:26:57,386 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:26:57,387 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:26:57,388 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/relax-2.i [2019-09-09 05:26:57,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5350facf/c451468bdca2462db8532cd6062c09ae/FLAG556175466 [2019-09-09 05:26:57,912 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:26:57,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/relax-2.i [2019-09-09 05:26:57,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5350facf/c451468bdca2462db8532cd6062c09ae/FLAG556175466 [2019-09-09 05:26:58,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5350facf/c451468bdca2462db8532cd6062c09ae [2019-09-09 05:26:58,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:26:58,256 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:26:58,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:26:58,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:26:58,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:26:58,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:26:58" (1/1) ... [2019-09-09 05:26:58,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b3651b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:58, skipping insertion in model container [2019-09-09 05:26:58,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:26:58" (1/1) ... [2019-09-09 05:26:58,271 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:26:58,321 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:26:58,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:26:58,739 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:26:58,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:26:58,836 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:26:58,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:58 WrapperNode [2019-09-09 05:26:58,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:26:58,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:26:58,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:26:58,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:26:58,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:58" (1/1) ... [2019-09-09 05:26:58,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:58" (1/1) ... [2019-09-09 05:26:58,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:58" (1/1) ... [2019-09-09 05:26:58,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:58" (1/1) ... [2019-09-09 05:26:58,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:58" (1/1) ... [2019-09-09 05:26:58,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:58" (1/1) ... [2019-09-09 05:26:58,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:58" (1/1) ... [2019-09-09 05:26:58,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:26:58,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:26:58,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:26:58,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:26:58,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:58" (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 [2019-09-09 05:26:58,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:26:58,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:26:58,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-09 05:26:58,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-09 05:26:58,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-09 05:26:58,974 INFO L138 BoogieDeclarations]: Found implementation of procedure is_relaxed_prefix [2019-09-09 05:26:58,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:26:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-09-09 05:26:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 05:26:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-09 05:26:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:26:58,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-09 05:26:58,976 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-09 05:26:58,977 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-09 05:26:58,977 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-09 05:26:58,978 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-09 05:26:58,978 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-09 05:26:58,978 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-09 05:26:58,978 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-09 05:26:58,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-09 05:26:58,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-09 05:26:58,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-09 05:26:58,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-09 05:26:58,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-09 05:26:58,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-09 05:26:58,980 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-09 05:26:58,980 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-09 05:26:58,981 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-09 05:26:58,981 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-09 05:26:58,981 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-09 05:26:58,981 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-09 05:26:58,981 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-09 05:26:58,981 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-09 05:26:58,981 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-09 05:26:58,982 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-09 05:26:58,982 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-09 05:26:58,982 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-09 05:26:58,982 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-09 05:26:58,983 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-09 05:26:58,983 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-09 05:26:58,983 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-09 05:26:58,983 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-09 05:26:58,983 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-09 05:26:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-09 05:26:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-09 05:26:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-09 05:26:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-09 05:26:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-09 05:26:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-09 05:26:58,985 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-09 05:26:58,985 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-09 05:26:58,985 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-09 05:26:58,985 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-09 05:26:58,985 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-09 05:26:58,985 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-09 05:26:58,985 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-09 05:26:58,985 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-09 05:26:58,986 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-09 05:26:58,986 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-09 05:26:58,986 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-09 05:26:58,986 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-09 05:26:58,986 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-09 05:26:58,986 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-09 05:26:58,987 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-09 05:26:58,987 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-09 05:26:58,987 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-09 05:26:58,987 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-09 05:26:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-09 05:26:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-09 05:26:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-09 05:26:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-09 05:26:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-09 05:26:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-09 05:26:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-09 05:26:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-09 05:26:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 05:26:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-09 05:26:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-09 05:26:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-09 05:26:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-09 05:26:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-09 05:26:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-09 05:26:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-09 05:26:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-09 05:26:58,992 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-09 05:26:58,992 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-09 05:26:58,993 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-09 05:26:58,993 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-09 05:26:58,993 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-09 05:26:58,994 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-09 05:26:58,994 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-09 05:26:58,994 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-09 05:26:58,994 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-09 05:26:58,994 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-09 05:26:58,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-09 05:26:58,994 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-09 05:26:58,995 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-09 05:26:58,995 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-09 05:26:58,995 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-09 05:26:58,995 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-09 05:26:58,995 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-09 05:26:58,995 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-09 05:26:58,995 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-09 05:26:58,996 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-09 05:26:58,996 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-09 05:26:58,996 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-09 05:26:58,996 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-09 05:26:58,996 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-09 05:26:58,996 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-09 05:26:58,996 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-09 05:26:58,996 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-09 05:26:58,997 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-09 05:26:58,997 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-09 05:26:58,997 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-09 05:26:58,997 INFO L130 BoogieDeclarations]: Found specification of procedure is_relaxed_prefix [2019-09-09 05:26:58,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-09 05:26:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:26:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-09 05:26:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-09 05:26:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:26:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:26:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-09 05:26:59,492 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:26:59,493 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-09 05:26:59,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:26:59 BoogieIcfgContainer [2019-09-09 05:26:59,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:26:59,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:26:59,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:26:59,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:26:59,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:26:58" (1/3) ... [2019-09-09 05:26:59,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26af1ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:26:59, skipping insertion in model container [2019-09-09 05:26:59,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:26:58" (2/3) ... [2019-09-09 05:26:59,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26af1ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:26:59, skipping insertion in model container [2019-09-09 05:26:59,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:26:59" (3/3) ... [2019-09-09 05:26:59,501 INFO L109 eAbstractionObserver]: Analyzing ICFG relax-2.i [2019-09-09 05:26:59,511 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:26:59,518 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:26:59,534 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:26:59,558 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:26:59,559 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:26:59,559 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:26:59,559 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:26:59,560 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:26:59,560 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:26:59,560 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:26:59,561 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:26:59,574 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-09-09 05:26:59,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-09 05:26:59,583 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:26:59,584 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:26:59,587 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:26:59,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:26:59,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1056215727, now seen corresponding path program 1 times [2019-09-09 05:26:59,594 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:26:59,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:26:59,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:26:59,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:26:59,638 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:26:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:26:59,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:26:59,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:26:59,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 05:26:59,797 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:26:59,801 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 05:26:59,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 05:26:59,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:26:59,816 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2019-09-09 05:26:59,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:26:59,859 INFO L93 Difference]: Finished difference Result 53 states and 71 transitions. [2019-09-09 05:26:59,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 05:26:59,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2019-09-09 05:26:59,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:26:59,873 INFO L225 Difference]: With dead ends: 53 [2019-09-09 05:26:59,874 INFO L226 Difference]: Without dead ends: 48 [2019-09-09 05:26:59,877 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:26:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-09-09 05:26:59,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-09-09 05:26:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-09-09 05:26:59,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2019-09-09 05:26:59,940 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 19 [2019-09-09 05:26:59,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:26:59,941 INFO L475 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2019-09-09 05:26:59,941 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 05:26:59,941 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2019-09-09 05:26:59,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-09 05:26:59,944 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:26:59,944 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:26:59,944 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:26:59,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:26:59,946 INFO L82 PathProgramCache]: Analyzing trace with hash -864018085, now seen corresponding path program 1 times [2019-09-09 05:26:59,946 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:26:59,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:26:59,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:26:59,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:26:59,953 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:27:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:27:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:27:00,121 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:27:00,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 05:27:00,121 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:27:00,123 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 05:27:00,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 05:27:00,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-09 05:27:00,124 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand 6 states. [2019-09-09 05:27:00,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:27:00,292 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2019-09-09 05:27:00,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 05:27:00,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-09-09 05:27:00,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:27:00,294 INFO L225 Difference]: With dead ends: 69 [2019-09-09 05:27:00,294 INFO L226 Difference]: Without dead ends: 60 [2019-09-09 05:27:00,295 INFO L628 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 [2019-09-09 05:27:00,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-09-09 05:27:00,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2019-09-09 05:27:00,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-09-09 05:27:00,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2019-09-09 05:27:00,305 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 21 [2019-09-09 05:27:00,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:27:00,306 INFO L475 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2019-09-09 05:27:00,306 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 05:27:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2019-09-09 05:27:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-09 05:27:00,307 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:27:00,307 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:27:00,308 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:27:00,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:27:00,308 INFO L82 PathProgramCache]: Analyzing trace with hash 2053893332, now seen corresponding path program 1 times [2019-09-09 05:27:00,308 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:27:00,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:00,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:27:00,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:00,310 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:27:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:27:00,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:27:00,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:27:00,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 05:27:00,433 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:27:00,434 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 05:27:00,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 05:27:00,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-09 05:27:00,434 INFO L87 Difference]: Start difference. First operand 57 states and 77 transitions. Second operand 6 states. [2019-09-09 05:27:00,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:27:00,604 INFO L93 Difference]: Finished difference Result 63 states and 84 transitions. [2019-09-09 05:27:00,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-09 05:27:00,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-09-09 05:27:00,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:27:00,610 INFO L225 Difference]: With dead ends: 63 [2019-09-09 05:27:00,611 INFO L226 Difference]: Without dead ends: 63 [2019-09-09 05:27:00,613 INFO L628 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 [2019-09-09 05:27:00,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-09-09 05:27:00,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2019-09-09 05:27:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-09-09 05:27:00,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 82 transitions. [2019-09-09 05:27:00,628 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 82 transitions. Word has length 22 [2019-09-09 05:27:00,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:27:00,628 INFO L475 AbstractCegarLoop]: Abstraction has 61 states and 82 transitions. [2019-09-09 05:27:00,628 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 05:27:00,628 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 82 transitions. [2019-09-09 05:27:00,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-09 05:27:00,630 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:27:00,630 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:27:00,630 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:27:00,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:27:00,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1666437145, now seen corresponding path program 1 times [2019-09-09 05:27:00,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:27:00,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:00,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:27:00,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:27:00,638 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:27:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:27:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:27:00,919 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:27:00,919 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 05:27:00,920 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2019-09-09 05:27:00,922 INFO L207 CegarAbsIntRunner]: [2], [5], [7], [13], [17], [23], [44], [45], [46], [47], [48], [54], [56], [58], [62], [68], [79], [159], [160], [161], [167], [168], [169] [2019-09-09 05:27:00,971 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:27:00,971 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 05:27:01,053 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 05:27:01,055 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 17 root evaluator evaluations with a maximum evaluation depth of 0. Performed 17 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 29 variables. [2019-09-09 05:27:01,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:27:01,060 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 05:27:01,120 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-09 05:27:01,120 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 05:27:01,124 INFO L420 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-09-09 05:27:01,124 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 05:27:01,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 05:27:01,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-09-09 05:27:01,125 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:27:01,127 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:27:01,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:27:01,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:27:01,128 INFO L87 Difference]: Start difference. First operand 61 states and 82 transitions. Second operand 2 states. [2019-09-09 05:27:01,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:27:01,129 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-09 05:27:01,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:27:01,130 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-09-09 05:27:01,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:27:01,130 INFO L225 Difference]: With dead ends: 6 [2019-09-09 05:27:01,130 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:27:01,131 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:27:01,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:27:01,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:27:01,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:27:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:27:01,132 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-09-09 05:27:01,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:27:01,133 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:27:01,133 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:27:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:27:01,133 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:27:01,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:27:01 BoogieIcfgContainer [2019-09-09 05:27:01,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:27:01,142 INFO L168 Benchmark]: Toolchain (without parser) took 2884.08 ms. Allocated memory was 131.1 MB in the beginning and 218.1 MB in the end (delta: 87.0 MB). Free memory was 86.0 MB in the beginning and 121.2 MB in the end (delta: -35.2 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2019-09-09 05:27:01,143 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 131.1 MB. Free memory was 105.6 MB in the beginning and 105.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 05:27:01,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 580.20 ms. Allocated memory was 131.1 MB in the beginning and 197.7 MB in the end (delta: 66.6 MB). Free memory was 85.8 MB in the beginning and 159.1 MB in the end (delta: -73.3 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2019-09-09 05:27:01,147 INFO L168 Benchmark]: Boogie Preprocessor took 86.39 ms. Allocated memory is still 197.7 MB. Free memory was 159.1 MB in the beginning and 156.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2019-09-09 05:27:01,148 INFO L168 Benchmark]: RCFGBuilder took 566.93 ms. Allocated memory is still 197.7 MB. Free memory was 156.0 MB in the beginning and 110.0 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. [2019-09-09 05:27:01,149 INFO L168 Benchmark]: TraceAbstraction took 1643.54 ms. Allocated memory was 197.7 MB in the beginning and 218.1 MB in the end (delta: 20.4 MB). Free memory was 109.3 MB in the beginning and 121.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.6 MB. Max. memory is 7.1 GB. [2019-09-09 05:27:01,159 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 131.1 MB. Free memory was 105.6 MB in the beginning and 105.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 580.20 ms. Allocated memory was 131.1 MB in the beginning and 197.7 MB in the end (delta: 66.6 MB). Free memory was 85.8 MB in the beginning and 159.1 MB in the end (delta: -73.3 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.39 ms. Allocated memory is still 197.7 MB. Free memory was 159.1 MB in the beginning and 156.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 566.93 ms. Allocated memory is still 197.7 MB. Free memory was 156.0 MB in the beginning and 110.0 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1643.54 ms. Allocated memory was 197.7 MB in the beginning and 218.1 MB in the end (delta: 20.4 MB). Free memory was 109.3 MB in the beginning and 121.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 56 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 173 SDtfs, 65 SDslu, 506 SDs, 0 SdLazy, 133 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 0.875 AbsIntWeakeningRatio, 1.5 AbsIntAvgWeakeningVarsNumRemoved, 0.2727272727272727 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 8702 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...