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 -i ../../../trunk/examples/svcomp/forester-heap/dll-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 16:25:32,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:25:32,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:25:32,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 16:25:32,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 16:25:32,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 16:25:32,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 16:25:32,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 16:25:32,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 16:25:32,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 16:25:32,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 16:25:32,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 16:25:32,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 16:25:32,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 16:25:32,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 16:25:32,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 16:25:32,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 16:25:32,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 16:25:32,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 16:25:32,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 16:25:32,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 16:25:32,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 16:25:32,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 16:25:32,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 16:25:32,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 16:25:32,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 16:25:32,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 16:25:32,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 16:25:32,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 16:25:32,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 16:25:32,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 16:25:32,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 16:25:32,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 16:25:32,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 16:25:32,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 16:25:32,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 16:25:32,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 16:25:32,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 16:25:32,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:25:32,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:25:32,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:25:32,718 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 [2019-09-16 16:25:32,732 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:25:32,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:25:32,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:25:32,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:25:32,734 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:25:32,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:25:32,734 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:25:32,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:25:32,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:25:32,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:25:32,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:25:32,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:25:32,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:25:32,736 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:25:32,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:25:32,736 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:25:32,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:25:32,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:25:32,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:25:32,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:25:32,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:25:32,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:25:32,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:25:32,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:25:32,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:25:32,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:25:32,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:25:32,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:25:32,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:25:32,767 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:25:32,781 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:25:32,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:25:32,786 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:25:32,786 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:25:32,787 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-2.i [2019-09-16 16:25:32,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f98869bb/91bfe8b7022f418d8087914fb4706f71/FLAGb4dbb0f6a [2019-09-16 16:25:33,317 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:25:33,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-2.i [2019-09-16 16:25:33,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f98869bb/91bfe8b7022f418d8087914fb4706f71/FLAGb4dbb0f6a [2019-09-16 16:25:33,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f98869bb/91bfe8b7022f418d8087914fb4706f71 [2019-09-16 16:25:33,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:25:33,628 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:25:33,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:25:33,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:25:33,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:25:33,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:25:33" (1/1) ... [2019-09-16 16:25:33,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64e3482a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:25:33, skipping insertion in model container [2019-09-16 16:25:33,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:25:33" (1/1) ... [2019-09-16 16:25:33,645 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:25:33,707 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:25:34,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:25:34,152 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:25:34,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:25:34,277 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:25:34,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:25:34 WrapperNode [2019-09-16 16:25:34,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:25:34,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:25:34,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:25:34,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:25:34,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:25:34" (1/1) ... [2019-09-16 16:25:34,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:25:34" (1/1) ... [2019-09-16 16:25:34,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:25:34" (1/1) ... [2019-09-16 16:25:34,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:25:34" (1/1) ... [2019-09-16 16:25:34,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:25:34" (1/1) ... [2019-09-16 16:25:34,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:25:34" (1/1) ... [2019-09-16 16:25:34,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:25:34" (1/1) ... [2019-09-16 16:25:34,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:25:34,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:25:34,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:25:34,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:25:34,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:25:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:25:34,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:25:34,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:25:34,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:25:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-16 16:25:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-16 16:25:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-16 16:25:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-16 16:25:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-16 16:25:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-16 16:25:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-16 16:25:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-16 16:25:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-16 16:25:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-16 16:25:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-16 16:25:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-16 16:25:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-16 16:25:34,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-16 16:25:34,484 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-16 16:25:34,484 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-16 16:25:34,484 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-16 16:25:34,484 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-16 16:25:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-16 16:25:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-16 16:25:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-16 16:25:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-16 16:25:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-16 16:25:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-16 16:25:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-16 16:25:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-16 16:25:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-16 16:25:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-16 16:25:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-16 16:25:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-16 16:25:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-16 16:25:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-16 16:25:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-16 16:25:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-16 16:25:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-16 16:25:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-16 16:25:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-16 16:25:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-16 16:25:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-16 16:25:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-16 16:25:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-16 16:25:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-16 16:25:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-16 16:25:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-16 16:25:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-16 16:25:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-16 16:25:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-16 16:25:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-16 16:25:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-16 16:25:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-16 16:25:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 16:25:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-16 16:25:34,490 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-16 16:25:34,490 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 16:25:34,490 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-16 16:25:34,490 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-16 16:25:34,490 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-16 16:25:34,490 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-16 16:25:34,490 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-16 16:25:34,491 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-16 16:25:34,491 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-16 16:25:34,491 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-16 16:25:34,491 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-16 16:25:34,491 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-16 16:25:34,491 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-16 16:25:34,492 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-16 16:25:34,492 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-16 16:25:34,492 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-16 16:25:34,492 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-16 16:25:34,492 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-16 16:25:34,492 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-16 16:25:34,492 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-16 16:25:34,493 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-16 16:25:34,493 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-16 16:25:34,493 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-16 16:25:34,493 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-16 16:25:34,493 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-16 16:25:34,493 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-16 16:25:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-16 16:25:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-16 16:25:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-16 16:25:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-16 16:25:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-16 16:25:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-16 16:25:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-16 16:25:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-16 16:25:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-16 16:25:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-16 16:25:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-16 16:25:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-16 16:25:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-16 16:25:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-16 16:25:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-16 16:25:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-16 16:25:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-16 16:25:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-16 16:25:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-16 16:25:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-16 16:25:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-16 16:25:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-16 16:25:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-16 16:25:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-16 16:25:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-16 16:25:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 16:25:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:25:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:25:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 16:25:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 16:25:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 16:25:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 16:25:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 16:25:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 16:25:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:25:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:25:35,125 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:25:35,126 INFO L283 CfgBuilder]: Removed 9 assume(true) statements. [2019-09-16 16:25:35,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:25:35 BoogieIcfgContainer [2019-09-16 16:25:35,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:25:35,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:25:35,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:25:35,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:25:35,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:25:33" (1/3) ... [2019-09-16 16:25:35,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57772063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:25:35, skipping insertion in model container [2019-09-16 16:25:35,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:25:34" (2/3) ... [2019-09-16 16:25:35,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57772063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:25:35, skipping insertion in model container [2019-09-16 16:25:35,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:25:35" (3/3) ... [2019-09-16 16:25:35,137 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-circular-2.i [2019-09-16 16:25:35,150 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:25:35,161 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-09-16 16:25:35,181 INFO L252 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-09-16 16:25:35,218 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:25:35,218 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:25:35,218 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:25:35,219 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:25:35,219 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:25:35,219 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:25:35,219 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:25:35,219 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:25:35,220 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:25:35,240 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-09-16 16:25:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-16 16:25:35,246 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:25:35,247 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:25:35,249 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:25:35,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:25:35,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1483997276, now seen corresponding path program 1 times [2019-09-16 16:25:35,258 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:25:35,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:25:35,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:25:35,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:25:35,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:25:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:25:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:25:35,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:25:35,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 16:25:35,425 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 16:25:35,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 16:25:35,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 16:25:35,443 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-09-16 16:25:35,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:25:35,468 INFO L93 Difference]: Finished difference Result 70 states and 106 transitions. [2019-09-16 16:25:35,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 16:25:35,470 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-16 16:25:35,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:25:35,478 INFO L225 Difference]: With dead ends: 70 [2019-09-16 16:25:35,480 INFO L226 Difference]: Without dead ends: 30 [2019-09-16 16:25:35,486 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 16:25:35,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-09-16 16:25:35,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-09-16 16:25:35,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-16 16:25:35,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-09-16 16:25:35,519 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 10 [2019-09-16 16:25:35,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:25:35,520 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-09-16 16:25:35,520 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 16:25:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-09-16 16:25:35,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-16 16:25:35,521 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:25:35,521 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:25:35,521 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:25:35,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:25:35,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1199756337, now seen corresponding path program 1 times [2019-09-16 16:25:35,522 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:25:35,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:25:35,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:25:35,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:25:35,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:25:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:25:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:25:35,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:25:35,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 16:25:35,744 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 16:25:35,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 16:25:35,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 16:25:35,745 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 4 states. [2019-09-16 16:25:35,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:25:35,847 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2019-09-16 16:25:35,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 16:25:35,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-09-16 16:25:35,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:25:35,849 INFO L225 Difference]: With dead ends: 46 [2019-09-16 16:25:35,849 INFO L226 Difference]: Without dead ends: 42 [2019-09-16 16:25:35,850 INFO L636 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 [2019-09-16 16:25:35,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-16 16:25:35,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2019-09-16 16:25:35,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-16 16:25:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-09-16 16:25:35,858 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 11 [2019-09-16 16:25:35,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:25:35,858 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-09-16 16:25:35,858 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 16:25:35,859 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-09-16 16:25:35,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-16 16:25:35,860 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:25:35,860 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:25:35,860 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:25:35,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:25:35,861 INFO L82 PathProgramCache]: Analyzing trace with hash -97127833, now seen corresponding path program 1 times [2019-09-16 16:25:35,861 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:25:35,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:25:35,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:25:35,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:25:35,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:25:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:25:35,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:25:35,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:25:35,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 16:25:35,990 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 16:25:35,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 16:25:35,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 16:25:35,991 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 3 states. [2019-09-16 16:25:36,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:25:36,019 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2019-09-16 16:25:36,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 16:25:36,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-16 16:25:36,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:25:36,023 INFO L225 Difference]: With dead ends: 75 [2019-09-16 16:25:36,023 INFO L226 Difference]: Without dead ends: 53 [2019-09-16 16:25:36,024 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 16:25:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-09-16 16:25:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2019-09-16 16:25:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-16 16:25:36,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2019-09-16 16:25:36,032 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 14 [2019-09-16 16:25:36,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:25:36,033 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2019-09-16 16:25:36,033 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 16:25:36,033 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2019-09-16 16:25:36,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-16 16:25:36,034 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:25:36,034 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:25:36,034 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:25:36,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:25:36,035 INFO L82 PathProgramCache]: Analyzing trace with hash 2075944349, now seen corresponding path program 1 times [2019-09-16 16:25:36,035 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:25:36,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:25:36,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:25:36,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:25:36,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:25:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:25:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:25:36,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:25:36,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 16:25:36,075 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 16:25:36,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 16:25:36,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 16:25:36,076 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 3 states. [2019-09-16 16:25:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:25:36,094 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2019-09-16 16:25:36,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 16:25:36,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-09-16 16:25:36,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:25:36,102 INFO L225 Difference]: With dead ends: 42 [2019-09-16 16:25:36,102 INFO L226 Difference]: Without dead ends: 40 [2019-09-16 16:25:36,103 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 16:25:36,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-16 16:25:36,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-09-16 16:25:36,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-16 16:25:36,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2019-09-16 16:25:36,110 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 17 [2019-09-16 16:25:36,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:25:36,110 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2019-09-16 16:25:36,110 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 16:25:36,110 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2019-09-16 16:25:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-16 16:25:36,111 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:25:36,111 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:25:36,112 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:25:36,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:25:36,112 INFO L82 PathProgramCache]: Analyzing trace with hash 2075946271, now seen corresponding path program 1 times [2019-09-16 16:25:36,112 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:25:36,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:25:36,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:25:36,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:25:36,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:25:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:25:36,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:25:36,412 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:25:36,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 16:25:36,413 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 16:25:36,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 16:25:36,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 16:25:36,413 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 5 states. [2019-09-16 16:25:36,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:25:36,665 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2019-09-16 16:25:36,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 16:25:36,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-09-16 16:25:36,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:25:36,667 INFO L225 Difference]: With dead ends: 51 [2019-09-16 16:25:36,667 INFO L226 Difference]: Without dead ends: 38 [2019-09-16 16:25:36,670 INFO L636 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 [2019-09-16 16:25:36,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-09-16 16:25:36,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-09-16 16:25:36,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-09-16 16:25:36,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2019-09-16 16:25:36,679 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 17 [2019-09-16 16:25:36,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:25:36,680 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2019-09-16 16:25:36,680 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 16:25:36,680 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2019-09-16 16:25:36,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-16 16:25:36,681 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:25:36,681 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:25:36,682 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:25:36,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:25:36,682 INFO L82 PathProgramCache]: Analyzing trace with hash -351040154, now seen corresponding path program 1 times [2019-09-16 16:25:36,683 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:25:36,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:25:36,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:25:36,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:25:36,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:25:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:25:36,761 ERROR L253 erpolLogProxyWrapper]: Interpolant 7 not inductive [2019-09-16 16:25:36,778 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:221) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:863) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:461) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-09-16 16:25:36,783 INFO L168 Benchmark]: Toolchain (without parser) took 3153.72 ms. Allocated memory was 133.2 MB in the beginning and 224.9 MB in the end (delta: 91.8 MB). Free memory was 87.3 MB in the beginning and 128.9 MB in the end (delta: -41.5 MB). Peak memory consumption was 50.2 MB. Max. memory is 7.1 GB. [2019-09-16 16:25:36,784 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 133.2 MB. Free memory is still 106.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 16:25:36,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.01 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 87.3 MB in the beginning and 164.8 MB in the end (delta: -77.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2019-09-16 16:25:36,788 INFO L168 Benchmark]: Boogie Preprocessor took 125.95 ms. Allocated memory is still 200.3 MB. Free memory was 164.8 MB in the beginning and 162.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-09-16 16:25:36,789 INFO L168 Benchmark]: RCFGBuilder took 722.73 ms. Allocated memory is still 200.3 MB. Free memory was 161.2 MB in the beginning and 118.0 MB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2019-09-16 16:25:36,791 INFO L168 Benchmark]: TraceAbstraction took 1652.00 ms. Allocated memory was 200.3 MB in the beginning and 224.9 MB in the end (delta: 24.6 MB). Free memory was 117.1 MB in the beginning and 128.9 MB in the end (delta: -11.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2019-09-16 16:25:36,801 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 133.2 MB. Free memory is still 106.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 649.01 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 87.3 MB in the beginning and 164.8 MB in the end (delta: -77.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.95 ms. Allocated memory is still 200.3 MB. Free memory was 164.8 MB in the beginning and 162.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 722.73 ms. Allocated memory is still 200.3 MB. Free memory was 161.2 MB in the beginning and 118.0 MB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1652.00 ms. Allocated memory was 200.3 MB in the beginning and 224.9 MB in the end (delta: 24.6 MB). Free memory was 117.1 MB in the beginning and 128.9 MB in the end (delta: -11.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:221) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...