/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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/forester-heap/dll-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 02:08:00,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 02:08:00,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 02:08:00,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 02:08:00,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 02:08:00,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 02:08:00,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 02:08:00,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 02:08:00,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 02:08:00,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 02:08:00,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 02:08:00,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 02:08:00,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 02:08:00,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 02:08:00,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 02:08:00,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 02:08:00,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 02:08:00,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 02:08:00,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 02:08:00,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 02:08:00,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 02:08:00,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 02:08:00,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 02:08:00,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 02:08:00,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 02:08:00,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 02:08:00,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 02:08:00,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 02:08:00,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 02:08:00,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 02:08:00,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 02:08:00,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 02:08:00,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 02:08:00,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 02:08:00,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 02:08:00,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 02:08:00,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 02:08:00,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 02:08:00,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 02:08:00,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 02:08:00,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 02:08:00,352 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 [2019-11-07 02:08:00,385 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 02:08:00,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 02:08:00,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 02:08:00,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 02:08:00,392 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 02:08:00,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 02:08:00,393 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 02:08:00,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 02:08:00,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 02:08:00,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 02:08:00,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 02:08:00,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 02:08:00,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 02:08:00,394 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 02:08:00,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 02:08:00,394 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 02:08:00,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 02:08:00,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 02:08:00,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 02:08:00,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 02:08:00,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 02:08:00,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 02:08:00,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 02:08:00,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 02:08:00,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 02:08:00,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 02:08:00,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 02:08:00,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 02:08:00,400 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 02:08:00,743 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 02:08:00,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 02:08:00,768 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 02:08:00,770 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 02:08:00,770 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 02:08:00,771 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-2.i [2019-11-07 02:08:00,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/159690385/ee4543d3cd3a4007851050342a744481/FLAG1f662afd6 [2019-11-07 02:08:01,314 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 02:08:01,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-2.i [2019-11-07 02:08:01,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/159690385/ee4543d3cd3a4007851050342a744481/FLAG1f662afd6 [2019-11-07 02:08:01,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/159690385/ee4543d3cd3a4007851050342a744481 [2019-11-07 02:08:01,680 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 02:08:01,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 02:08:01,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 02:08:01,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 02:08:01,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 02:08:01,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:01" (1/1) ... [2019-11-07 02:08:01,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74348c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:01, skipping insertion in model container [2019-11-07 02:08:01,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:01" (1/1) ... [2019-11-07 02:08:01,699 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 02:08:01,756 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 02:08:02,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:08:02,289 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 02:08:02,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:08:02,382 INFO L192 MainTranslator]: Completed translation [2019-11-07 02:08:02,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:02 WrapperNode [2019-11-07 02:08:02,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 02:08:02,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 02:08:02,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 02:08:02,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 02:08:02,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:02" (1/1) ... [2019-11-07 02:08:02,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:02" (1/1) ... [2019-11-07 02:08:02,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:02" (1/1) ... [2019-11-07 02:08:02,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:02" (1/1) ... [2019-11-07 02:08:02,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:02" (1/1) ... [2019-11-07 02:08:02,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:02" (1/1) ... [2019-11-07 02:08:02,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:02" (1/1) ... [2019-11-07 02:08:02,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 02:08:02,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 02:08:02,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 02:08:02,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 02:08:02,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:02" (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 [2019-11-07 02:08:02,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 02:08:02,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 02:08:02,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 02:08:02,557 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 02:08:02,557 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 02:08:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 02:08:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 02:08:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 02:08:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 02:08:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 02:08:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 02:08:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 02:08:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 02:08:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 02:08:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 02:08:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 02:08:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 02:08:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 02:08:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 02:08:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 02:08:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 02:08:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 02:08:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 02:08:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 02:08:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 02:08:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 02:08:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 02:08:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 02:08:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 02:08:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 02:08:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 02:08:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 02:08:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 02:08:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 02:08:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 02:08:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 02:08:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 02:08:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 02:08:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 02:08:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 02:08:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 02:08:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 02:08:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 02:08:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 02:08:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 02:08:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 02:08:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 02:08:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 02:08:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 02:08:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 02:08:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 02:08:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 02:08:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 02:08:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 02:08:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 02:08:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 02:08:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 02:08:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 02:08:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 02:08:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 02:08:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 02:08:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 02:08:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 02:08:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 02:08:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 02:08:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 02:08:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 02:08:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 02:08:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 02:08:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 02:08:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 02:08:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 02:08:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 02:08:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 02:08:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 02:08:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 02:08:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 02:08:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 02:08:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 02:08:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 02:08:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 02:08:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 02:08:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 02:08:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 02:08:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 02:08:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 02:08:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 02:08:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 02:08:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 02:08:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 02:08:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 02:08:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 02:08:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 02:08:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 02:08:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 02:08:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 02:08:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 02:08:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 02:08:02,573 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 02:08:02,573 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 02:08:02,573 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 02:08:02,573 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 02:08:02,573 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 02:08:02,573 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 02:08:02,573 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 02:08:02,573 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 02:08:02,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 02:08:02,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 02:08:02,574 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 02:08:02,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 02:08:02,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 02:08:02,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 02:08:02,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 02:08:02,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 02:08:02,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 02:08:02,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 02:08:02,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 02:08:03,181 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 02:08:03,182 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-07 02:08:03,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:03 BoogieIcfgContainer [2019-11-07 02:08:03,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 02:08:03,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 02:08:03,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 02:08:03,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 02:08:03,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:08:01" (1/3) ... [2019-11-07 02:08:03,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9665f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:03, skipping insertion in model container [2019-11-07 02:08:03,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:02" (2/3) ... [2019-11-07 02:08:03,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9665f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:03, skipping insertion in model container [2019-11-07 02:08:03,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:03" (3/3) ... [2019-11-07 02:08:03,195 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-circular-2.i [2019-11-07 02:08:03,206 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 02:08:03,214 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-07 02:08:03,226 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-07 02:08:03,255 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 02:08:03,256 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 02:08:03,256 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 02:08:03,256 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 02:08:03,256 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 02:08:03,257 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 02:08:03,257 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 02:08:03,257 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 02:08:03,273 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-11-07 02:08:03,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-07 02:08:03,279 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:03,280 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:03,282 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:03,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:03,288 INFO L82 PathProgramCache]: Analyzing trace with hash 749315359, now seen corresponding path program 1 times [2019-11-07 02:08:03,298 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:03,298 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733648210] [2019-11-07 02:08:03,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:03,457 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733648210] [2019-11-07 02:08:03,458 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:08:03,458 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 02:08:03,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51303868] [2019-11-07 02:08:03,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 02:08:03,465 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:03,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 02:08:03,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 02:08:03,484 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2019-11-07 02:08:03,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:08:03,512 INFO L93 Difference]: Finished difference Result 65 states and 99 transitions. [2019-11-07 02:08:03,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 02:08:03,514 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-07 02:08:03,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:08:03,526 INFO L225 Difference]: With dead ends: 65 [2019-11-07 02:08:03,526 INFO L226 Difference]: Without dead ends: 28 [2019-11-07 02:08:03,531 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 [2019-11-07 02:08:03,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-07 02:08:03,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-07 02:08:03,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-07 02:08:03,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-07 02:08:03,580 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 9 [2019-11-07 02:08:03,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:08:03,581 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-07 02:08:03,581 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 02:08:03,581 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-07 02:08:03,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 02:08:03,582 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:03,582 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:03,583 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:03,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:03,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1712971286, now seen corresponding path program 1 times [2019-11-07 02:08:03,584 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:03,584 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774089553] [2019-11-07 02:08:03,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:03,825 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774089553] [2019-11-07 02:08:03,825 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:08:03,825 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 02:08:03,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711767045] [2019-11-07 02:08:03,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:08:03,827 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:03,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:08:03,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:08:03,828 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2019-11-07 02:08:03,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:08:03,921 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2019-11-07 02:08:03,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 02:08:03,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-07 02:08:03,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:08:03,923 INFO L225 Difference]: With dead ends: 43 [2019-11-07 02:08:03,923 INFO L226 Difference]: Without dead ends: 39 [2019-11-07 02:08:03,924 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 [2019-11-07 02:08:03,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-07 02:08:03,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2019-11-07 02:08:03,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-07 02:08:03,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-07 02:08:03,931 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 10 [2019-11-07 02:08:03,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:08:03,931 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-07 02:08:03,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:08:03,931 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-07 02:08:03,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-07 02:08:03,932 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:03,932 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:03,933 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:03,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:03,933 INFO L82 PathProgramCache]: Analyzing trace with hash -994155934, now seen corresponding path program 1 times [2019-11-07 02:08:03,933 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:03,934 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195752737] [2019-11-07 02:08:03,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:03,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:03,998 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195752737] [2019-11-07 02:08:03,999 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:08:03,999 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:08:03,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962101664] [2019-11-07 02:08:03,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:08:04,000 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:04,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:08:04,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:08:04,000 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 3 states. [2019-11-07 02:08:04,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:08:04,034 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2019-11-07 02:08:04,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:08:04,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-07 02:08:04,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:08:04,040 INFO L225 Difference]: With dead ends: 71 [2019-11-07 02:08:04,040 INFO L226 Difference]: Without dead ends: 50 [2019-11-07 02:08:04,042 INFO L630 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 [2019-11-07 02:08:04,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-07 02:08:04,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2019-11-07 02:08:04,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-07 02:08:04,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2019-11-07 02:08:04,058 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 13 [2019-11-07 02:08:04,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:08:04,058 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2019-11-07 02:08:04,058 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:08:04,059 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2019-11-07 02:08:04,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-07 02:08:04,059 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:04,060 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:04,060 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:04,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:04,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1588532202, now seen corresponding path program 1 times [2019-11-07 02:08:04,061 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:04,061 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903996184] [2019-11-07 02:08:04,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:04,334 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903996184] [2019-11-07 02:08:04,334 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:08:04,335 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 02:08:04,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775635449] [2019-11-07 02:08:04,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 02:08:04,336 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:04,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 02:08:04,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:08:04,336 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 5 states. [2019-11-07 02:08:04,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:08:04,569 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2019-11-07 02:08:04,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 02:08:04,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-07 02:08:04,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:08:04,571 INFO L225 Difference]: With dead ends: 46 [2019-11-07 02:08:04,571 INFO L226 Difference]: Without dead ends: 35 [2019-11-07 02:08:04,572 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 02:08:04,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-07 02:08:04,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-11-07 02:08:04,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-07 02:08:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-11-07 02:08:04,584 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 15 [2019-11-07 02:08:04,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:08:04,584 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-11-07 02:08:04,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 02:08:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2019-11-07 02:08:04,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-07 02:08:04,585 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:08:04,586 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:08:04,586 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:08:04,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:08:04,586 INFO L82 PathProgramCache]: Analyzing trace with hash -428681333, now seen corresponding path program 1 times [2019-11-07 02:08:04,587 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:08:04,588 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640056347] [2019-11-07 02:08:04,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:08:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:04,709 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640056347] [2019-11-07 02:08:04,709 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062918514] [2019-11-07 02:08:04,710 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 [2019-11-07 02:08:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:08:04,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-07 02:08:04,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:08:04,907 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-07 02:08:04,908 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:04,923 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:04,923 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-07 02:08:04,924 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-07 02:08:04,966 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:04,967 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 15 [2019-11-07 02:08:04,968 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:04,983 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:04,993 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:08:05,066 INFO L341 Elim1Store]: treesize reduction 30, result has 57.7 percent of original size [2019-11-07 02:08:05,067 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 51 [2019-11-07 02:08:05,068 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:05,102 INFO L567 ElimStorePlain]: treesize reduction 24, result has 59.3 percent of original size [2019-11-07 02:08:05,105 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:08:05,106 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:111, output treesize:32 [2019-11-07 02:08:07,193 WARN L191 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 23 [2019-11-07 02:08:07,266 INFO L341 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2019-11-07 02:08:07,267 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 41 [2019-11-07 02:08:07,268 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:07,282 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:07,283 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 02:08:07,284 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:51, output treesize:23 [2019-11-07 02:08:09,327 INFO L392 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.base|], 6=[|v_#memory_$Pointer$.base_24|]} [2019-11-07 02:08:09,335 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:08:09,347 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:09,363 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:09,364 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 55 [2019-11-07 02:08:09,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,368 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:09,379 INFO L567 ElimStorePlain]: treesize reduction 23, result has 28.1 percent of original size [2019-11-07 02:08:09,380 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 02:08:09,380 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:66, output treesize:4 [2019-11-07 02:08:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:09,384 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:08:09,403 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:08:09,408 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:09,409 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:08:09,409 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:18 [2019-11-07 02:08:09,442 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:08:09,452 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:08:09,453 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:08:09,453 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:18 [2019-11-07 02:08:09,482 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1861 treesize of output 1853 [2019-11-07 02:08:09,489 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-07 02:08:09,899 WARN L191 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 43 [2019-11-07 02:08:09,900 INFO L567 ElimStorePlain]: treesize reduction 1774, result has 4.2 percent of original size [2019-11-07 02:08:09,902 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-11-07 02:08:09,902 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:143, output treesize:75 [2019-11-07 02:08:09,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,903 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,905 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,905 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,906 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,908 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,909 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,910 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,910 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,911 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,911 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,913 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,913 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:08:09,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:08:09,990 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1734087233] [2019-11-07 02:08:10,014 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-11-07 02:08:10,014 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 02:08:10,019 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 02:08:10,026 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 02:08:10,026 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 02:08:10,163 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-11-07 02:08:35,278 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 02:08:35,281 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 02:08:35,546 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 02:08:35,547 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5, 10] total 18 [2019-11-07 02:08:35,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467159434] [2019-11-07 02:08:35,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-07 02:08:35,548 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:08:35,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-07 02:08:35,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=258, Unknown=1, NotChecked=0, Total=306 [2019-11-07 02:08:35,550 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 18 states. [2019-11-07 02:08:37,899 WARN L191 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 32