/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:58:54,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:58:54,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:58:54,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:58:54,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:58:54,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:58:54,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:58:54,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:58:54,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:58:54,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:58:54,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:58:54,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:58:54,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:58:54,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:58:54,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:58:54,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:58:54,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:58:54,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:58:54,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:58:54,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:58:54,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:58:54,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:58:54,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:58:54,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:58:54,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:58:54,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:58:54,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:58:54,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:58:54,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:58:54,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:58:54,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:58:54,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:58:54,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:58:54,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:58:54,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:58:54,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:58:54,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:58:54,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:58:54,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:58:54,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:58:54,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:58:54,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:58:54,583 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:58:54,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:58:54,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:58:54,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:58:54,585 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:58:54,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:58:54,586 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:58:54,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:58:54,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:58:54,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:58:54,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:58:54,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:58:54,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:58:54,587 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:58:54,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:58:54,588 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:58:54,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:58:54,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:58:54,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:58:54,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:58:54,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:58:54,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:58:54,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:58:54,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:58:54,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:58:54,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:58:54,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:58:54,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:58:54,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:58:54,858 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:58:54,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:58:54,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:58:54,876 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:58:54,876 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:58:54,877 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i [2019-11-06 22:58:54,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b71bccd/0fea22e8b05247628eed25289d4c5826/FLAG60c140445 [2019-11-06 22:58:55,506 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:58:55,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-1.i [2019-11-06 22:58:55,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b71bccd/0fea22e8b05247628eed25289d4c5826/FLAG60c140445 [2019-11-06 22:58:55,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b71bccd/0fea22e8b05247628eed25289d4c5826 [2019-11-06 22:58:55,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:58:55,746 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:58:55,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:58:55,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:58:55,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:58:55,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:55" (1/1) ... [2019-11-06 22:58:55,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7076498d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:55, skipping insertion in model container [2019-11-06 22:58:55,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:55" (1/1) ... [2019-11-06 22:58:55,761 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:58:55,815 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:58:56,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:58:56,249 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:58:56,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:58:56,362 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:58:56,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:56 WrapperNode [2019-11-06 22:58:56,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:58:56,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:58:56,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:58:56,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:58:56,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:56" (1/1) ... [2019-11-06 22:58:56,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:56" (1/1) ... [2019-11-06 22:58:56,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:56" (1/1) ... [2019-11-06 22:58:56,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:56" (1/1) ... [2019-11-06 22:58:56,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:56" (1/1) ... [2019-11-06 22:58:56,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:56" (1/1) ... [2019-11-06 22:58:56,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:56" (1/1) ... [2019-11-06 22:58:56,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:58:56,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:58:56,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:58:56,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:58:56,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:56" (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 [2019-11-06 22:58:56,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:58:56,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:58:56,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:58:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-06 22:58:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-06 22:58:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-06 22:58:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-06 22:58:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-06 22:58:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-06 22:58:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-06 22:58:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-06 22:58:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-06 22:58:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-06 22:58:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-06 22:58:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-06 22:58:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-06 22:58:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-06 22:58:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-06 22:58:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-06 22:58:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-06 22:58:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-06 22:58:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-06 22:58:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-06 22:58:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-06 22:58:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-06 22:58:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-06 22:58:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-06 22:58:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-06 22:58:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-06 22:58:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-06 22:58:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-06 22:58:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-06 22:58:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-06 22:58:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-06 22:58:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-06 22:58:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-06 22:58:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-06 22:58:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-06 22:58:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-06 22:58:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-06 22:58:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-06 22:58:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-06 22:58:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-06 22:58:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-06 22:58:56,498 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-06 22:58:56,498 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-06 22:58:56,498 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-06 22:58:56,498 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-06 22:58:56,498 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-06 22:58:56,498 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-06 22:58:56,499 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-06 22:58:56,499 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-06 22:58:56,499 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-06 22:58:56,499 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:58:56,499 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 22:58:56,499 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-06 22:58:56,499 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:58:56,500 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-06 22:58:56,500 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-06 22:58:56,500 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-06 22:58:56,500 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-06 22:58:56,500 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-06 22:58:56,500 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-06 22:58:56,501 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-06 22:58:56,501 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-06 22:58:56,501 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-06 22:58:56,501 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:58:56,501 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-06 22:58:56,501 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-06 22:58:56,502 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-06 22:58:56,502 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-06 22:58:56,502 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-06 22:58:56,502 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-06 22:58:56,502 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-06 22:58:56,502 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-06 22:58:56,502 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-06 22:58:56,503 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-06 22:58:56,503 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-06 22:58:56,503 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-06 22:58:56,503 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-06 22:58:56,503 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-06 22:58:56,503 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-06 22:58:56,503 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-06 22:58:56,504 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-06 22:58:56,504 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-06 22:58:56,504 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-06 22:58:56,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-06 22:58:56,504 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-06 22:58:56,504 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-06 22:58:56,504 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-06 22:58:56,505 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-06 22:58:56,505 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-06 22:58:56,505 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-06 22:58:56,505 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-06 22:58:56,505 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-06 22:58:56,505 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-06 22:58:56,505 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-06 22:58:56,506 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-06 22:58:56,506 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-06 22:58:56,506 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-06 22:58:56,506 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-06 22:58:56,506 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-06 22:58:56,506 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-06 22:58:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-06 22:58:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-06 22:58:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-06 22:58:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:58:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:58:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:58:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:58:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:58:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:58:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:58:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:58:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:58:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:58:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:58:57,111 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:58:57,112 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-06 22:58:57,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:57 BoogieIcfgContainer [2019-11-06 22:58:57,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:58:57,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:58:57,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:58:57,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:58:57,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:58:55" (1/3) ... [2019-11-06 22:58:57,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e08e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:57, skipping insertion in model container [2019-11-06 22:58:57,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:56" (2/3) ... [2019-11-06 22:58:57,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e08e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:57, skipping insertion in model container [2019-11-06 22:58:57,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:57" (3/3) ... [2019-11-06 22:58:57,121 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-1.i [2019-11-06 22:58:57,131 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:58:57,141 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-06 22:58:57,152 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-06 22:58:57,187 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:58:57,187 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:58:57,187 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:58:57,188 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:58:57,188 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:58:57,188 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:58:57,188 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:58:57,188 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:58:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2019-11-06 22:58:57,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-06 22:58:57,222 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:57,231 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:58:57,236 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:57,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:57,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1255802584, now seen corresponding path program 1 times [2019-11-06 22:58:57,252 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:57,253 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913902684] [2019-11-06 22:58:57,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:57,429 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913902684] [2019-11-06 22:58:57,430 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:57,431 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:58:57,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499942873] [2019-11-06 22:58:57,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:58:57,440 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:57,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:58:57,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:58:57,457 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2019-11-06 22:58:57,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:57,481 INFO L93 Difference]: Finished difference Result 98 states and 156 transitions. [2019-11-06 22:58:57,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:58:57,483 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-06 22:58:57,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:57,491 INFO L225 Difference]: With dead ends: 98 [2019-11-06 22:58:57,492 INFO L226 Difference]: Without dead ends: 45 [2019-11-06 22:58:57,495 INFO L630 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 [2019-11-06 22:58:57,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-06 22:58:57,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-11-06 22:58:57,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-06 22:58:57,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-11-06 22:58:57,538 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 10 [2019-11-06 22:58:57,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:57,538 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2019-11-06 22:58:57,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:58:57,539 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-11-06 22:58:57,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-06 22:58:57,539 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:57,540 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:58:57,540 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:57,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:57,541 INFO L82 PathProgramCache]: Analyzing trace with hash -338068956, now seen corresponding path program 1 times [2019-11-06 22:58:57,541 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:57,541 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901435004] [2019-11-06 22:58:57,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:57,646 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901435004] [2019-11-06 22:58:57,646 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:57,646 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:58:57,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906802780] [2019-11-06 22:58:57,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:58:57,649 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:57,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:58:57,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:58:57,651 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2019-11-06 22:58:57,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:57,760 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2019-11-06 22:58:57,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:58:57,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-06 22:58:57,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:57,762 INFO L225 Difference]: With dead ends: 48 [2019-11-06 22:58:57,763 INFO L226 Difference]: Without dead ends: 44 [2019-11-06 22:58:57,764 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:58:57,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-06 22:58:57,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2019-11-06 22:58:57,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-06 22:58:57,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2019-11-06 22:58:57,771 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 11 [2019-11-06 22:58:57,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:57,771 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2019-11-06 22:58:57,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:58:57,771 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2019-11-06 22:58:57,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-06 22:58:57,772 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:57,772 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:58:57,773 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:57,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:57,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1890143313, now seen corresponding path program 1 times [2019-11-06 22:58:57,773 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:57,774 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646951535] [2019-11-06 22:58:57,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:57,872 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646951535] [2019-11-06 22:58:57,872 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:57,873 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:58:57,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190842374] [2019-11-06 22:58:57,873 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:58:57,874 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:57,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:58:57,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:58:57,874 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 4 states. [2019-11-06 22:58:57,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:57,941 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2019-11-06 22:58:57,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:58:57,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-06 22:58:57,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:57,945 INFO L225 Difference]: With dead ends: 41 [2019-11-06 22:58:57,945 INFO L226 Difference]: Without dead ends: 39 [2019-11-06 22:58:57,946 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:58:57,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-06 22:58:57,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-11-06 22:58:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-06 22:58:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2019-11-06 22:58:57,956 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 12 [2019-11-06 22:58:57,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:57,957 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2019-11-06 22:58:57,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:58:57,957 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2019-11-06 22:58:57,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-06 22:58:57,958 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:57,958 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:58:57,959 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:57,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:57,959 INFO L82 PathProgramCache]: Analyzing trace with hash 290038970, now seen corresponding path program 1 times [2019-11-06 22:58:57,959 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:57,960 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869618088] [2019-11-06 22:58:57,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:58,086 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869618088] [2019-11-06 22:58:58,087 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:58,087 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:58:58,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233800072] [2019-11-06 22:58:58,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:58:58,088 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:58,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:58:58,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:58:58,088 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 5 states. [2019-11-06 22:58:58,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:58,254 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2019-11-06 22:58:58,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:58:58,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-06 22:58:58,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:58,259 INFO L225 Difference]: With dead ends: 64 [2019-11-06 22:58:58,259 INFO L226 Difference]: Without dead ends: 62 [2019-11-06 22:58:58,260 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:58:58,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-06 22:58:58,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2019-11-06 22:58:58,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-06 22:58:58,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2019-11-06 22:58:58,277 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 14 [2019-11-06 22:58:58,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:58,277 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2019-11-06 22:58:58,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:58:58,278 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2019-11-06 22:58:58,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 22:58:58,281 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:58,281 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:58:58,282 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:58,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:58,282 INFO L82 PathProgramCache]: Analyzing trace with hash 2060721718, now seen corresponding path program 1 times [2019-11-06 22:58:58,282 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:58,283 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712750928] [2019-11-06 22:58:58,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:58,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:58,404 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712750928] [2019-11-06 22:58:58,404 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:58,404 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:58:58,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166549136] [2019-11-06 22:58:58,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:58:58,406 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:58,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:58:58,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:58:58,407 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 4 states. [2019-11-06 22:58:58,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:58,492 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2019-11-06 22:58:58,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:58:58,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-06 22:58:58,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:58,493 INFO L225 Difference]: With dead ends: 46 [2019-11-06 22:58:58,493 INFO L226 Difference]: Without dead ends: 44 [2019-11-06 22:58:58,494 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:58:58,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-06 22:58:58,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-11-06 22:58:58,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-06 22:58:58,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2019-11-06 22:58:58,500 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 15 [2019-11-06 22:58:58,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:58,500 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2019-11-06 22:58:58,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:58:58,501 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2019-11-06 22:58:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-06 22:58:58,502 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:58,502 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:58:58,502 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:58,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:58,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1568846049, now seen corresponding path program 1 times [2019-11-06 22:58:58,503 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:58,503 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106311943] [2019-11-06 22:58:58,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:58,608 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106311943] [2019-11-06 22:58:58,609 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:58,609 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:58:58,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533688338] [2019-11-06 22:58:58,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:58:58,610 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:58,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:58:58,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:58:58,611 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 5 states. [2019-11-06 22:58:58,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:58,703 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2019-11-06 22:58:58,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:58:58,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-11-06 22:58:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:58,705 INFO L225 Difference]: With dead ends: 59 [2019-11-06 22:58:58,705 INFO L226 Difference]: Without dead ends: 47 [2019-11-06 22:58:58,705 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:58:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-06 22:58:58,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2019-11-06 22:58:58,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-06 22:58:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2019-11-06 22:58:58,712 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 18 [2019-11-06 22:58:58,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:58,712 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2019-11-06 22:58:58,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:58:58,712 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2019-11-06 22:58:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-06 22:58:58,713 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:58,713 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:58:58,714 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:58,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:58,714 INFO L82 PathProgramCache]: Analyzing trace with hash 777661568, now seen corresponding path program 1 times [2019-11-06 22:58:58,714 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:58,715 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727988995] [2019-11-06 22:58:58,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:58,778 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727988995] [2019-11-06 22:58:58,779 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971314330] [2019-11-06 22:58:58,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:58:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:58,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-06 22:58:58,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:58:59,008 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:58:59,011 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:58:59,014 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:58:59,025 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2019-11-06 22:58:59,026 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:58:59,040 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:58:59,056 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:58:59,057 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:58:59,059 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 22:58:59,064 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2019-11-06 22:58:59,065 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 22:58:59,082 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:58:59,083 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:58:59,083 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:58, output treesize:36 [2019-11-06 22:58:59,167 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-11-06 22:58:59,168 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:58:59,177 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:58:59,181 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:58:59,182 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2019-11-06 22:58:59,183 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 22:58:59,187 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:58:59,188 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:58:59,188 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:7 [2019-11-06 22:58:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:59,193 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:58:59,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:59,225 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [691259616] [2019-11-06 22:58:59,239 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 22 [2019-11-06 22:58:59,285 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:58:59,285 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:58:59,378 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:58:59,382 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 19 root evaluator evaluations with a maximum evaluation depth of 0. Performed 19 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 31 variables. [2019-11-06 22:58:59,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:59,388 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:58:59,449 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:58:59,449 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:58:59,454 INFO L553 sIntCurrentIteration]: We unified 20 AI predicates to 20 [2019-11-06 22:58:59,454 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:58:59,455 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:58:59,455 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5, 5] total 7 [2019-11-06 22:58:59,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304493866] [2019-11-06 22:58:59,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:58:59,457 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:59,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:58:59,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:58:59,457 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 2 states. [2019-11-06 22:58:59,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:59,462 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2019-11-06 22:58:59,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:58:59,462 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2019-11-06 22:58:59,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:59,462 INFO L225 Difference]: With dead ends: 46 [2019-11-06 22:58:59,462 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:58:59,464 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:58:59,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:58:59,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:58:59,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:58:59,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:58:59,465 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-11-06 22:58:59,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:59,465 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:58:59,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:58:59,466 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:58:59,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:58:59,672 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:58:59,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:58:59,696 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:58:59,696 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:58:59,696 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:58:59,696 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:58:59,696 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:58:59,696 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:58:59,696 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:58:59,697 INFO L443 ceAbstractionStarter]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 1040) no Hoare annotation was computed. [2019-11-06 22:58:59,697 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 991 1065) no Hoare annotation was computed. [2019-11-06 22:58:59,697 INFO L443 ceAbstractionStarter]: For program point L1010(lines 1010 1022) no Hoare annotation was computed. [2019-11-06 22:58:59,697 INFO L443 ceAbstractionStarter]: For program point L1002-1(lines 1002 1026) no Hoare annotation was computed. [2019-11-06 22:58:59,697 INFO L443 ceAbstractionStarter]: For program point L1002-3(lines 1002 1026) no Hoare annotation was computed. [2019-11-06 22:58:59,697 INFO L443 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 1032) no Hoare annotation was computed. [2019-11-06 22:58:59,697 INFO L443 ceAbstractionStarter]: For program point L1036(lines 1036 1041) no Hoare annotation was computed. [2019-11-06 22:58:59,697 INFO L443 ceAbstractionStarter]: For program point L1036-1(lines 1036 1041) no Hoare annotation was computed. [2019-11-06 22:58:59,697 INFO L443 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 1033) no Hoare annotation was computed. [2019-11-06 22:58:59,697 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 991 1065) no Hoare annotation was computed. [2019-11-06 22:58:59,698 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 991 1065) the Hoare annotation is: true [2019-11-06 22:58:59,698 INFO L443 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 1024) no Hoare annotation was computed. [2019-11-06 22:58:59,698 INFO L443 ceAbstractionStarter]: For program point L1047-1(lines 1047 1062) no Hoare annotation was computed. [2019-11-06 22:58:59,698 INFO L443 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 1025) no Hoare annotation was computed. [2019-11-06 22:58:59,698 INFO L443 ceAbstractionStarter]: For program point L1039-1(line 1039) no Hoare annotation was computed. [2019-11-06 22:58:59,698 INFO L443 ceAbstractionStarter]: For program point L1039-3(line 1039) no Hoare annotation was computed. [2019-11-06 22:58:59,698 INFO L439 ceAbstractionStarter]: At program point L1039-4(line 1039) the Hoare annotation is: false [2019-11-06 22:58:59,698 INFO L443 ceAbstractionStarter]: For program point L1023(line 1023) no Hoare annotation was computed. [2019-11-06 22:58:59,699 INFO L443 ceAbstractionStarter]: For program point L1023-1(line 1023) no Hoare annotation was computed. [2019-11-06 22:58:59,699 INFO L443 ceAbstractionStarter]: For program point L1023-3(line 1023) no Hoare annotation was computed. [2019-11-06 22:58:59,699 INFO L443 ceAbstractionStarter]: For program point L1023-4(lines 1003 1026) no Hoare annotation was computed. [2019-11-06 22:58:59,699 INFO L443 ceAbstractionStarter]: For program point L1040(line 1040) no Hoare annotation was computed. [2019-11-06 22:58:59,699 INFO L443 ceAbstractionStarter]: For program point L1040-1(line 1040) no Hoare annotation was computed. [2019-11-06 22:58:59,699 INFO L443 ceAbstractionStarter]: For program point L1040-3(line 1040) no Hoare annotation was computed. [2019-11-06 22:58:59,699 INFO L443 ceAbstractionStarter]: For program point L1040-4(lines 1037 1041) no Hoare annotation was computed. [2019-11-06 22:58:59,699 INFO L443 ceAbstractionStarter]: For program point L1032-1(line 1032) no Hoare annotation was computed. [2019-11-06 22:58:59,699 INFO L443 ceAbstractionStarter]: For program point L1032-3(line 1032) no Hoare annotation was computed. [2019-11-06 22:58:59,699 INFO L439 ceAbstractionStarter]: At program point L1032-4(line 1032) the Hoare annotation is: false [2019-11-06 22:58:59,699 INFO L443 ceAbstractionStarter]: For program point L1024(line 1024) no Hoare annotation was computed. [2019-11-06 22:58:59,700 INFO L443 ceAbstractionStarter]: For program point L1024-1(line 1024) no Hoare annotation was computed. [2019-11-06 22:58:59,700 INFO L443 ceAbstractionStarter]: For program point L1024-3(line 1024) no Hoare annotation was computed. [2019-11-06 22:58:59,700 INFO L443 ceAbstractionStarter]: For program point L1024-4(lines 1003 1026) no Hoare annotation was computed. [2019-11-06 22:58:59,700 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1023) no Hoare annotation was computed. [2019-11-06 22:58:59,700 INFO L443 ceAbstractionStarter]: For program point L1049(lines 1049 1061) no Hoare annotation was computed. [2019-11-06 22:58:59,700 INFO L443 ceAbstractionStarter]: For program point L1049-2(lines 992 1065) no Hoare annotation was computed. [2019-11-06 22:58:59,700 INFO L443 ceAbstractionStarter]: For program point L1033(line 1033) no Hoare annotation was computed. [2019-11-06 22:58:59,700 INFO L443 ceAbstractionStarter]: For program point L1033-1(line 1033) no Hoare annotation was computed. [2019-11-06 22:58:59,700 INFO L443 ceAbstractionStarter]: For program point L1033-3(line 1033) no Hoare annotation was computed. [2019-11-06 22:58:59,700 INFO L443 ceAbstractionStarter]: For program point L1033-4(lines 992 1065) no Hoare annotation was computed. [2019-11-06 22:58:59,700 INFO L443 ceAbstractionStarter]: For program point L1025(line 1025) no Hoare annotation was computed. [2019-11-06 22:58:59,700 INFO L443 ceAbstractionStarter]: For program point L1025-2(line 1025) no Hoare annotation was computed. [2019-11-06 22:58:59,701 INFO L443 ceAbstractionStarter]: For program point L1025-3(lines 1003 1026) no Hoare annotation was computed. [2019-11-06 22:58:59,701 INFO L443 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 1039) no Hoare annotation was computed. [2019-11-06 22:58:59,701 INFO L439 ceAbstractionStarter]: At program point L1025-4(lines 1002 1026) the Hoare annotation is: false [2019-11-06 22:58:59,701 INFO L443 ceAbstractionStarter]: For program point L1034-1(lines 992 1065) no Hoare annotation was computed. [2019-11-06 22:58:59,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:58:59 BoogieIcfgContainer [2019-11-06 22:58:59,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:58:59,714 INFO L168 Benchmark]: Toolchain (without parser) took 3968.06 ms. Allocated memory was 144.7 MB in the beginning and 249.0 MB in the end (delta: 104.3 MB). Free memory was 101.9 MB in the beginning and 187.4 MB in the end (delta: -85.5 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2019-11-06 22:58:59,715 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 22:58:59,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.74 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 101.7 MB in the beginning and 169.8 MB in the end (delta: -68.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2019-11-06 22:58:59,716 INFO L168 Benchmark]: Boogie Preprocessor took 70.17 ms. Allocated memory is still 202.4 MB. Free memory was 169.8 MB in the beginning and 165.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2019-11-06 22:58:59,717 INFO L168 Benchmark]: RCFGBuilder took 679.08 ms. Allocated memory is still 202.4 MB. Free memory was 165.9 MB in the beginning and 116.8 MB in the end (delta: 49.1 MB). Peak memory consumption was 49.1 MB. Max. memory is 7.1 GB. [2019-11-06 22:58:59,718 INFO L168 Benchmark]: TraceAbstraction took 2597.76 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 116.8 MB in the beginning and 187.4 MB in the end (delta: -70.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-11-06 22:58:59,722 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 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 616.74 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 101.7 MB in the beginning and 169.8 MB in the end (delta: -68.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.17 ms. Allocated memory is still 202.4 MB. Free memory was 169.8 MB in the beginning and 165.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 679.08 ms. Allocated memory is still 202.4 MB. Free memory was 165.9 MB in the beginning and 116.8 MB in the end (delta: 49.1 MB). Peak memory consumption was 49.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2597.76 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 116.8 MB in the beginning and 187.4 MB in the end (delta: -70.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1024]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1025]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1023]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1032]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1033]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1040]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1039]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 1032]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 1002]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 1039]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 52 locations, 7 error locations. Result: SAFE, OverallTime: 2.5s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 225 SDtfs, 124 SDslu, 263 SDs, 0 SdLazy, 152 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 18722 SizeOfPredicates, 9 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 3/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 149, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.925, AVG_VARS_REMOVED_DURING_WEAKENING: 0.85, AVG_WEAKENED_CONJUNCTS: 0.3, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...