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/list-properties/alternating_list-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:45:34,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:45:34,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:45:34,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:45:34,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:45:34,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:45:34,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:45:34,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:45:34,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:45:34,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:45:34,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:45:34,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:45:34,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:45:34,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:45:34,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:45:34,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:45:34,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:45:34,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:45:34,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:45:34,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:45:34,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:45:34,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:45:34,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:45:34,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:45:34,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 01:45:34,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 01:45:34,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 01:45:34,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 01:45:34,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 01:45:34,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 01:45:34,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:45:34,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:45:34,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:45:34,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:45:34,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:45:34,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:45:34,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:45:34,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:45:34,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:45:34,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:45:34,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:45:34,615 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 [2019-09-10 01:45:34,630 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:45:34,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:45:34,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:45:34,631 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:45:34,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:45:34,632 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:45:34,632 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:45:34,632 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:45:34,632 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:45:34,633 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:45:34,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:45:34,633 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:45:34,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:45:34,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:45:34,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:45:34,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:45:34,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:45:34,634 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:45:34,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:45:34,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:45:34,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:45:34,635 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:45:34,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:45:34,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:45:34,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:45:34,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:45:34,636 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:45:34,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:45:34,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:45:34,637 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:45:34,665 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:45:34,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:45:34,680 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:45:34,681 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:45:34,682 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:45:34,683 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/alternating_list-1.i [2019-09-10 01:45:34,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded623193/1b5a2ca238ad49b6b5993439abc58092/FLAGa10000980 [2019-09-10 01:45:35,256 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:45:35,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/alternating_list-1.i [2019-09-10 01:45:35,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded623193/1b5a2ca238ad49b6b5993439abc58092/FLAGa10000980 [2019-09-10 01:45:35,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded623193/1b5a2ca238ad49b6b5993439abc58092 [2019-09-10 01:45:35,594 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:45:35,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:45:35,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:45:35,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:45:35,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:45:35,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:45:35" (1/1) ... [2019-09-10 01:45:35,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@543dfd87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:35, skipping insertion in model container [2019-09-10 01:45:35,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:45:35" (1/1) ... [2019-09-10 01:45:35,612 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:45:35,651 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:45:36,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:45:36,051 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:45:36,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:45:36,201 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:45:36,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:36 WrapperNode [2019-09-10 01:45:36,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:45:36,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:45:36,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:45:36,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:45:36,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:36" (1/1) ... [2019-09-10 01:45:36,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:36" (1/1) ... [2019-09-10 01:45:36,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:36" (1/1) ... [2019-09-10 01:45:36,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:36" (1/1) ... [2019-09-10 01:45:36,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:36" (1/1) ... [2019-09-10 01:45:36,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:36" (1/1) ... [2019-09-10 01:45:36,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:36" (1/1) ... [2019-09-10 01:45:36,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:45:36,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:45:36,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:45:36,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:45:36,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:36" (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 [2019-09-10 01:45:36,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:45:36,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:45:36,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-10 01:45:36,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-10 01:45:36,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-09-10 01:45:36,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-09-10 01:45:36,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-09-10 01:45:36,332 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-10 01:45:36,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:45:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:45:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:45:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-10 01:45:36,334 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-10 01:45:36,334 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-10 01:45:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-10 01:45:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-10 01:45:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-10 01:45:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-10 01:45:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-10 01:45:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-10 01:45:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-10 01:45:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-10 01:45:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-10 01:45:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-10 01:45:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-10 01:45:36,338 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-10 01:45:36,338 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-10 01:45:36,338 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-10 01:45:36,338 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-10 01:45:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-09-10 01:45:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-09-10 01:45:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-09-10 01:45:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-10 01:45:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-10 01:45:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-10 01:45:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-10 01:45:36,340 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-10 01:45:36,340 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-10 01:45:36,340 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-10 01:45:36,341 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-10 01:45:36,341 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-10 01:45:36,341 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-10 01:45:36,341 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-10 01:45:36,342 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-10 01:45:36,342 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-10 01:45:36,342 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-10 01:45:36,342 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-10 01:45:36,342 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-10 01:45:36,342 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-10 01:45:36,343 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-10 01:45:36,343 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-10 01:45:36,343 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-10 01:45:36,343 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-10 01:45:36,343 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-10 01:45:36,343 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-10 01:45:36,343 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-10 01:45:36,344 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-10 01:45:36,344 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-10 01:45:36,344 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-10 01:45:36,344 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-10 01:45:36,344 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-10 01:45:36,344 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-10 01:45:36,344 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-10 01:45:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-10 01:45:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-10 01:45:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-10 01:45:36,346 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 01:45:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-10 01:45:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-10 01:45:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 01:45:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-10 01:45:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-10 01:45:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-10 01:45:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-10 01:45:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-10 01:45:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-10 01:45:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-10 01:45:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-10 01:45:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-10 01:45:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-10 01:45:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-10 01:45:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-10 01:45:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-10 01:45:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-10 01:45:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-10 01:45:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-10 01:45:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-10 01:45:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-10 01:45:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-10 01:45:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-10 01:45:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-10 01:45:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-10 01:45:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-10 01:45:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-10 01:45:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-10 01:45:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-10 01:45:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-10 01:45:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-10 01:45:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-10 01:45:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-10 01:45:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-10 01:45:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-10 01:45:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-10 01:45:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-10 01:45:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-10 01:45:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-10 01:45:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-10 01:45:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-10 01:45:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-10 01:45:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-10 01:45:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-10 01:45:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-10 01:45:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-10 01:45:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-10 01:45:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-10 01:45:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-10 01:45:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-10 01:45:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-10 01:45:36,357 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-10 01:45:36,357 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:45:36,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 01:45:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:45:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 01:45:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 01:45:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:45:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:45:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:45:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:45:36,693 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-10 01:45:36,916 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:45:36,916 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-10 01:45:36,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:45:36 BoogieIcfgContainer [2019-09-10 01:45:36,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:45:36,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:45:36,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:45:36,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:45:36,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:45:35" (1/3) ... [2019-09-10 01:45:36,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c398b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:45:36, skipping insertion in model container [2019-09-10 01:45:36,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:36" (2/3) ... [2019-09-10 01:45:36,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c398b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:45:36, skipping insertion in model container [2019-09-10 01:45:36,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:45:36" (3/3) ... [2019-09-10 01:45:36,937 INFO L109 eAbstractionObserver]: Analyzing ICFG alternating_list-1.i [2019-09-10 01:45:36,948 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:45:36,961 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:45:36,976 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:45:37,001 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:45:37,002 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:45:37,002 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:45:37,002 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:45:37,002 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:45:37,002 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:45:37,003 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:45:37,003 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:45:37,016 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-09-10 01:45:37,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-10 01:45:37,025 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:37,027 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:37,029 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:37,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:37,035 INFO L82 PathProgramCache]: Analyzing trace with hash 209903222, now seen corresponding path program 1 times [2019-09-10 01:45:37,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:37,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:37,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:37,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:37,097 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:37,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:45:37,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:37,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:45:37,181 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:37,186 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:45:37,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:45:37,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:45:37,205 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2019-09-10 01:45:37,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:37,226 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2019-09-10 01:45:37,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:45:37,228 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-09-10 01:45:37,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:37,236 INFO L225 Difference]: With dead ends: 35 [2019-09-10 01:45:37,236 INFO L226 Difference]: Without dead ends: 23 [2019-09-10 01:45:37,238 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:45:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-09-10 01:45:37,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-09-10 01:45:37,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-10 01:45:37,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-09-10 01:45:37,274 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2019-09-10 01:45:37,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:37,275 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-09-10 01:45:37,275 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:45:37,275 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-09-10 01:45:37,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-10 01:45:37,276 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:37,276 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:37,276 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:37,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:37,277 INFO L82 PathProgramCache]: Analyzing trace with hash 919137993, now seen corresponding path program 1 times [2019-09-10 01:45:37,277 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:37,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:37,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:37,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:37,279 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:45:37,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:37,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:45:37,376 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:37,378 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:45:37,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:45:37,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:45:37,379 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 3 states. [2019-09-10 01:45:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:37,426 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-09-10 01:45:37,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:45:37,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-09-10 01:45:37,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:37,429 INFO L225 Difference]: With dead ends: 36 [2019-09-10 01:45:37,429 INFO L226 Difference]: Without dead ends: 36 [2019-09-10 01:45:37,432 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:45:37,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-10 01:45:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2019-09-10 01:45:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-09-10 01:45:37,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2019-09-10 01:45:37,439 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 16 [2019-09-10 01:45:37,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:37,439 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2019-09-10 01:45:37,439 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:45:37,440 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2019-09-10 01:45:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-10 01:45:37,440 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:37,441 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:37,441 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:37,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:37,441 INFO L82 PathProgramCache]: Analyzing trace with hash 919131049, now seen corresponding path program 1 times [2019-09-10 01:45:37,442 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:37,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:37,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:37,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:37,444 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:45:37,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:37,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 01:45:37,546 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:37,546 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:45:37,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:45:37,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:45:37,547 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 5 states. [2019-09-10 01:45:37,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:37,665 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2019-09-10 01:45:37,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:45:37,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-10 01:45:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:37,667 INFO L225 Difference]: With dead ends: 49 [2019-09-10 01:45:37,668 INFO L226 Difference]: Without dead ends: 46 [2019-09-10 01:45:37,668 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:45:37,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-10 01:45:37,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2019-09-10 01:45:37,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-10 01:45:37,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2019-09-10 01:45:37,675 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 16 [2019-09-10 01:45:37,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:37,675 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2019-09-10 01:45:37,675 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:45:37,675 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2019-09-10 01:45:37,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-10 01:45:37,676 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:37,676 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:37,677 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:37,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:37,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1446652468, now seen corresponding path program 1 times [2019-09-10 01:45:37,677 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:37,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:37,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:37,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:37,680 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:45:37,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:45:37,947 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:45:37,948 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2019-09-10 01:45:37,950 INFO L207 CegarAbsIntRunner]: [11], [12], [13], [19], [21], [26], [29], [31], [34], [38], [44], [46], [50], [55], [60], [63], [66], [96], [110], [111], [112] [2019-09-10 01:45:37,993 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:45:37,993 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:45:38,054 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 01:45:38,055 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 20 root evaluator evaluations with a maximum evaluation depth of 0. Performed 20 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 32 variables. [2019-09-10 01:45:38,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:38,059 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 01:45:38,097 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-10 01:45:38,097 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 01:45:38,100 INFO L420 sIntCurrentIteration]: We unified 21 AI predicates to 21 [2019-09-10 01:45:38,100 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 01:45:38,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 01:45:38,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-10 01:45:38,101 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:38,101 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:45:38,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:45:38,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:45:38,102 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 2 states. [2019-09-10 01:45:38,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:38,104 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-10 01:45:38,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:45:38,104 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2019-09-10 01:45:38,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:38,105 INFO L225 Difference]: With dead ends: 6 [2019-09-10 01:45:38,105 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:45:38,105 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:45:38,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:45:38,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:45:38,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:45:38,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:45:38,106 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-09-10 01:45:38,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:38,107 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:45:38,107 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:45:38,107 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:45:38,107 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:45:38,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:45:38 BoogieIcfgContainer [2019-09-10 01:45:38,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:45:38,116 INFO L168 Benchmark]: Toolchain (without parser) took 2518.89 ms. Allocated memory was 131.6 MB in the beginning and 221.2 MB in the end (delta: 89.7 MB). Free memory was 86.2 MB in the beginning and 162.0 MB in the end (delta: -75.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:38,117 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 131.6 MB. Free memory is still 105.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:45:38,119 INFO L168 Benchmark]: CACSL2BoogieTranslator took 605.79 ms. Allocated memory was 131.6 MB in the beginning and 199.2 MB in the end (delta: 67.6 MB). Free memory was 85.8 MB in the beginning and 163.4 MB in the end (delta: -77.6 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:38,121 INFO L168 Benchmark]: Boogie Preprocessor took 63.41 ms. Allocated memory is still 199.2 MB. Free memory was 163.4 MB in the beginning and 160.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:38,122 INFO L168 Benchmark]: RCFGBuilder took 652.93 ms. Allocated memory is still 199.2 MB. Free memory was 160.4 MB in the beginning and 117.4 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:38,124 INFO L168 Benchmark]: TraceAbstraction took 1192.35 ms. Allocated memory was 199.2 MB in the beginning and 221.2 MB in the end (delta: 22.0 MB). Free memory was 117.4 MB in the beginning and 162.0 MB in the end (delta: -44.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:45:38,134 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 131.6 MB. Free memory is still 105.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 605.79 ms. Allocated memory was 131.6 MB in the beginning and 199.2 MB in the end (delta: 67.6 MB). Free memory was 85.8 MB in the beginning and 163.4 MB in the end (delta: -77.6 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.41 ms. Allocated memory is still 199.2 MB. Free memory was 163.4 MB in the beginning and 160.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 652.93 ms. Allocated memory is still 199.2 MB. Free memory was 160.4 MB in the beginning and 117.4 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1192.35 ms. Allocated memory was 199.2 MB in the beginning and 221.2 MB in the end (delta: 22.0 MB). Free memory was 117.4 MB in the beginning and 162.0 MB in the end (delta: -44.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 562]: 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 9 procedures, 51 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 98 SDtfs, 24 SDslu, 71 SDs, 0 SdLazy, 35 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, 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, 0.9404761904761905 AbsIntWeakeningRatio, 0.9523809523809523 AbsIntAvgWeakeningVarsNumRemoved, 0.2857142857142857 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 5284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...