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 0.1.24-673a906-m [2019-10-02 16:29:43,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:29:43,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:29:43,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:29:43,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:29:43,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:29:43,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:29:43,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:29:43,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:29:43,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:29:43,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:29:43,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:29:43,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:29:43,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:29:43,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:29:43,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:29:43,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:29:43,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:29:43,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:29:43,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:29:43,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:29:43,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:29:43,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:29:43,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:29:43,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 16:29:43,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 16:29:43,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 16:29:43,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 16:29:43,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 16:29:43,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 16:29:43,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:29:43,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:29:43,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:29:43,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:29:43,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:29:43,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:29:43,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:29:43,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:29:43,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:29:43,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:29:43,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:29:43,625 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 [2019-10-02 16:29:43,647 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:29:43,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:29:43,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:29:43,648 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:29:43,649 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:29:43,649 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:29:43,650 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:29:43,650 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:29:43,650 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:29:43,650 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:29:43,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:29:43,653 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:29:43,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:29:43,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:29:43,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:29:43,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:29:43,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:29:43,654 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:29:43,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:29:43,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:29:43,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:29:43,655 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:29:43,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:29:43,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:43,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:29:43,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:29:43,656 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:29:43,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:29:43,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:29:43,657 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:29:43,700 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:29:43,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:29:43,714 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:29:43,716 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:29:43,716 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:29:43,717 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/relax-2.i [2019-10-02 16:29:43,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47c16dd9a/4045af77ee2b4219be96b510213bf1da/FLAG7ebfa6a3a [2019-10-02 16:29:44,347 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:29:44,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/relax-2.i [2019-10-02 16:29:44,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47c16dd9a/4045af77ee2b4219be96b510213bf1da/FLAG7ebfa6a3a [2019-10-02 16:29:44,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47c16dd9a/4045af77ee2b4219be96b510213bf1da [2019-10-02 16:29:44,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:29:44,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:29:44,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:44,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:29:44,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:29:44,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:44" (1/1) ... [2019-10-02 16:29:44,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c8d1e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:44, skipping insertion in model container [2019-10-02 16:29:44,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:44" (1/1) ... [2019-10-02 16:29:44,677 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:29:44,723 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:29:45,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:45,190 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:29:45,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:45,296 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:29:45,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45 WrapperNode [2019-10-02 16:29:45,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:45,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:29:45,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:29:45,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:29:45,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (1/1) ... [2019-10-02 16:29:45,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (1/1) ... [2019-10-02 16:29:45,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (1/1) ... [2019-10-02 16:29:45,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (1/1) ... [2019-10-02 16:29:45,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (1/1) ... [2019-10-02 16:29:45,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (1/1) ... [2019-10-02 16:29:45,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (1/1) ... [2019-10-02 16:29:45,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:29:45,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:29:45,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:29:45,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:29:45,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (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 [2019-10-02 16:29:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:29:45,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:29:45,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:29:45,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-02 16:29:45,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-02 16:29:45,424 INFO L138 BoogieDeclarations]: Found implementation of procedure is_relaxed_prefix [2019-10-02 16:29:45,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:29:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-02 16:29:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:29:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 16:29:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:29:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:29:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-02 16:29:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-02 16:29:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-02 16:29:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-02 16:29:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-02 16:29:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-02 16:29:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-02 16:29:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-02 16:29:45,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-02 16:29:45,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-02 16:29:45,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-02 16:29:45,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-02 16:29:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-02 16:29:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-02 16:29:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-02 16:29:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-02 16:29:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-02 16:29:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-02 16:29:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-02 16:29:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-02 16:29:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-02 16:29:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-02 16:29:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-02 16:29:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-02 16:29:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-02 16:29:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-02 16:29:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-02 16:29:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-02 16:29:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-02 16:29:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-02 16:29:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-02 16:29:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-02 16:29:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-02 16:29:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-02 16:29:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-02 16:29:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-02 16:29:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-02 16:29:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-02 16:29:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-02 16:29:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-02 16:29:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-02 16:29:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-02 16:29:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-02 16:29:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-02 16:29:45,440 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-02 16:29:45,440 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-02 16:29:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-02 16:29:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-02 16:29:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-02 16:29:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-02 16:29:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-02 16:29:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-02 16:29:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 16:29:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-02 16:29:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-02 16:29:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-02 16:29:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-02 16:29:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-02 16:29:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-02 16:29:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-02 16:29:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-02 16:29:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-02 16:29:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-02 16:29:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 16:29:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-02 16:29:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-02 16:29:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-02 16:29:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-02 16:29:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-02 16:29:45,447 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-02 16:29:45,447 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-02 16:29:45,447 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-02 16:29:45,447 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-02 16:29:45,448 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-02 16:29:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-02 16:29:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-02 16:29:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-02 16:29:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-02 16:29:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-02 16:29:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-02 16:29:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-02 16:29:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-02 16:29:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-02 16:29:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-02 16:29:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-02 16:29:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-02 16:29:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-02 16:29:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-02 16:29:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-02 16:29:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-02 16:29:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-02 16:29:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-02 16:29:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-02 16:29:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-02 16:29:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-02 16:29:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-02 16:29:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-02 16:29:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-02 16:29:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-02 16:29:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-02 16:29:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-02 16:29:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-02 16:29:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure is_relaxed_prefix [2019-10-02 16:29:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:29:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:29:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 16:29:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:29:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:29:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:29:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:29:46,103 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:29:46,103 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-02 16:29:46,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:46 BoogieIcfgContainer [2019-10-02 16:29:46,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:29:46,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:29:46,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:29:46,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:29:46,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:29:44" (1/3) ... [2019-10-02 16:29:46,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2ccb1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:46, skipping insertion in model container [2019-10-02 16:29:46,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:45" (2/3) ... [2019-10-02 16:29:46,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2ccb1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:46, skipping insertion in model container [2019-10-02 16:29:46,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:46" (3/3) ... [2019-10-02 16:29:46,114 INFO L109 eAbstractionObserver]: Analyzing ICFG relax-2.i [2019-10-02 16:29:46,124 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:29:46,133 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:29:46,150 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:29:46,173 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:29:46,173 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:29:46,174 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:29:46,174 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:29:46,174 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:29:46,174 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:29:46,174 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:29:46,175 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:29:46,188 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-10-02 16:29:46,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-02 16:29:46,199 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:46,200 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:46,202 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:46,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:46,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1056215727, now seen corresponding path program 1 times [2019-10-02 16:29:46,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:46,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:46,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:46,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:46,269 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:46,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:46,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:29:46,451 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:46,457 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:29:46,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:29:46,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:29:46,481 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2019-10-02 16:29:46,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:46,534 INFO L93 Difference]: Finished difference Result 53 states and 71 transitions. [2019-10-02 16:29:46,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:29:46,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2019-10-02 16:29:46,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:46,549 INFO L225 Difference]: With dead ends: 53 [2019-10-02 16:29:46,549 INFO L226 Difference]: Without dead ends: 48 [2019-10-02 16:29:46,552 INFO L640 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 [2019-10-02 16:29:46,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-02 16:29:46,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-10-02 16:29:46,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-02 16:29:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2019-10-02 16:29:46,610 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 19 [2019-10-02 16:29:46,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:46,611 INFO L475 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2019-10-02 16:29:46,611 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:29:46,611 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2019-10-02 16:29:46,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-02 16:29:46,613 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:46,613 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:46,614 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:46,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:46,614 INFO L82 PathProgramCache]: Analyzing trace with hash -864018085, now seen corresponding path program 1 times [2019-10-02 16:29:46,615 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:46,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:46,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:46,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:46,622 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:46,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:46,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 16:29:46,780 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:46,781 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 16:29:46,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 16:29:46,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-02 16:29:46,782 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand 6 states. [2019-10-02 16:29:46,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:46,970 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2019-10-02 16:29:46,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 16:29:46,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-10-02 16:29:46,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:46,972 INFO L225 Difference]: With dead ends: 69 [2019-10-02 16:29:46,973 INFO L226 Difference]: Without dead ends: 60 [2019-10-02 16:29:46,974 INFO L640 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 [2019-10-02 16:29:46,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-10-02 16:29:46,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2019-10-02 16:29:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-02 16:29:46,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2019-10-02 16:29:46,984 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 21 [2019-10-02 16:29:46,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:46,985 INFO L475 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2019-10-02 16:29:46,985 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 16:29:46,985 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2019-10-02 16:29:46,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-02 16:29:46,987 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:46,987 INFO L411 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] [2019-10-02 16:29:46,987 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:46,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:46,988 INFO L82 PathProgramCache]: Analyzing trace with hash 2053893332, now seen corresponding path program 1 times [2019-10-02 16:29:46,988 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:46,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:46,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:46,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:46,992 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:47,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:47,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 16:29:47,153 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:47,154 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 16:29:47,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 16:29:47,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-02 16:29:47,155 INFO L87 Difference]: Start difference. First operand 57 states and 77 transitions. Second operand 6 states. [2019-10-02 16:29:47,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:47,321 INFO L93 Difference]: Finished difference Result 63 states and 84 transitions. [2019-10-02 16:29:47,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 16:29:47,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-10-02 16:29:47,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:47,326 INFO L225 Difference]: With dead ends: 63 [2019-10-02 16:29:47,327 INFO L226 Difference]: Without dead ends: 63 [2019-10-02 16:29:47,328 INFO L640 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 [2019-10-02 16:29:47,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-02 16:29:47,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2019-10-02 16:29:47,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-10-02 16:29:47,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 82 transitions. [2019-10-02 16:29:47,344 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 82 transitions. Word has length 22 [2019-10-02 16:29:47,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:47,345 INFO L475 AbstractCegarLoop]: Abstraction has 61 states and 82 transitions. [2019-10-02 16:29:47,345 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 16:29:47,345 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 82 transitions. [2019-10-02 16:29:47,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-02 16:29:47,348 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:47,348 INFO L411 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] [2019-10-02 16:29:47,348 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:47,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:47,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1666437145, now seen corresponding path program 1 times [2019-10-02 16:29:47,349 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:47,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:47,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:47,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:47,360 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:47,649 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:29:47,653 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:29:47,655 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2019-10-02 16:29:47,661 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] [2019-10-02 16:29:47,706 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:29:47,707 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:29:47,775 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:29:47,777 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. [2019-10-02 16:29:47,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:47,781 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:29:47,820 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:29:47,820 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:29:47,824 INFO L420 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-10-02 16:29:47,824 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:29:47,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:29:47,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-10-02 16:29:47,825 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:47,826 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:47,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:47,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:47,827 INFO L87 Difference]: Start difference. First operand 61 states and 82 transitions. Second operand 2 states. [2019-10-02 16:29:47,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:47,827 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:29:47,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:47,828 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-10-02 16:29:47,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:47,828 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:29:47,828 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:29:47,829 INFO L640 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 [2019-10-02 16:29:47,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:29:47,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:29:47,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:29:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:29:47,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-10-02 16:29:47,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:47,830 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:29:47,830 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:47,831 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:29:47,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:29:47,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:29:47 BoogieIcfgContainer [2019-10-02 16:29:47,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:29:47,839 INFO L168 Benchmark]: Toolchain (without parser) took 3177.16 ms. Allocated memory was 131.6 MB in the beginning and 218.1 MB in the end (delta: 86.5 MB). Free memory was 83.0 MB in the beginning and 118.1 MB in the end (delta: -35.0 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:47,840 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 131.6 MB. Free memory was 103.5 MB in the beginning and 103.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:29:47,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 634.78 ms. Allocated memory was 131.6 MB in the beginning and 199.2 MB in the end (delta: 67.6 MB). Free memory was 82.8 MB in the beginning and 163.7 MB in the end (delta: -80.8 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:47,842 INFO L168 Benchmark]: Boogie Preprocessor took 66.77 ms. Allocated memory is still 199.2 MB. Free memory was 163.7 MB in the beginning and 161.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:47,843 INFO L168 Benchmark]: RCFGBuilder took 740.24 ms. Allocated memory is still 199.2 MB. Free memory was 161.1 MB in the beginning and 113.6 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:47,844 INFO L168 Benchmark]: TraceAbstraction took 1730.46 ms. Allocated memory was 199.2 MB in the beginning and 218.1 MB in the end (delta: 18.9 MB). Free memory was 112.9 MB in the beginning and 118.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:47,848 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 131.6 MB. Free memory was 103.5 MB in the beginning and 103.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 634.78 ms. Allocated memory was 131.6 MB in the beginning and 199.2 MB in the end (delta: 67.6 MB). Free memory was 82.8 MB in the beginning and 163.7 MB in the end (delta: -80.8 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.77 ms. Allocated memory is still 199.2 MB. Free memory was 163.7 MB in the beginning and 161.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 740.24 ms. Allocated memory is still 199.2 MB. Free memory was 161.1 MB in the beginning and 113.6 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1730.46 ms. Allocated memory was 199.2 MB in the beginning and 218.1 MB in the end (delta: 18.9 MB). Free memory was 112.9 MB in the beginning and 118.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 13.7 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, 1.6s 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, 0.2s 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, 0.5s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 8198 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...