/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 -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:20:39,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:20:39,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:20:39,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:20:39,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:20:39,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:20:39,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:20:39,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:20:39,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:20:39,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:20:39,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:20:39,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:20:39,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:20:39,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:20:39,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:20:39,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:20:39,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:20:39,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:20:39,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:20:39,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:20:39,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:20:39,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:20:39,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:20:39,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:20:39,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 11:20:39,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 11:20:39,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 11:20:39,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 11:20:39,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 11:20:39,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 11:20:39,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 11:20:39,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 11:20:39,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 11:20:39,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 11:20:39,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 11:20:39,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 11:20:39,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 11:20:39,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 11:20:39,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:20:39,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:20:39,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:20:39,677 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 [2020-07-07 11:20:39,691 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:20:39,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:20:39,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:20:39,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:20:39,693 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:20:39,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:20:39,694 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:20:39,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:20:39,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:20:39,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:20:39,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:20:39,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:20:39,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:20:39,695 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:20:39,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:20:39,695 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:20:39,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:20:39,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:20:39,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:20:39,696 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:20:39,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:20:39,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:20:39,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:20:39,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:20:39,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:20:39,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:20:39,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:20:39,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:20:39,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:20:39,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:20:40,029 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:20:40,052 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:20:40,056 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:20:40,057 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:20:40,058 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:20:40,058 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-07 11:20:40,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d094f16/e7a7165308bf46318aa5011f4d94752e/FLAGd4f016ddf [2020-07-07 11:20:40,647 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:20:40,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-07 11:20:40,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d094f16/e7a7165308bf46318aa5011f4d94752e/FLAGd4f016ddf [2020-07-07 11:20:41,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d094f16/e7a7165308bf46318aa5011f4d94752e [2020-07-07 11:20:41,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:20:41,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:20:41,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:20:41,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:20:41,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:20:41,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:20:41" (1/1) ... [2020-07-07 11:20:41,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef7a893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:41, skipping insertion in model container [2020-07-07 11:20:41,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:20:41" (1/1) ... [2020-07-07 11:20:41,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:20:41,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:20:41,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:20:41,532 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:20:41,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:20:41,630 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:20:41,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:41 WrapperNode [2020-07-07 11:20:41,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:20:41,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:20:41,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:20:41,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:20:41,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:41" (1/1) ... [2020-07-07 11:20:41,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:41" (1/1) ... [2020-07-07 11:20:41,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:41" (1/1) ... [2020-07-07 11:20:41,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:41" (1/1) ... [2020-07-07 11:20:41,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:41" (1/1) ... [2020-07-07 11:20:41,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:41" (1/1) ... [2020-07-07 11:20:41,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:41" (1/1) ... [2020-07-07 11:20:41,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:20:41,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:20:41,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:20:41,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:20:41,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:41" (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 [2020-07-07 11:20:41,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:20:41,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:20:41,753 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:20:41,753 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 11:20:41,753 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 11:20:41,753 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 11:20:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 11:20:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 11:20:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 11:20:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 11:20:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 11:20:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 11:20:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 11:20:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 11:20:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 11:20:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 11:20:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 11:20:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 11:20:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 11:20:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 11:20:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 11:20:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 11:20:41,757 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 11:20:41,757 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 11:20:41,757 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 11:20:41,757 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 11:20:41,757 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 11:20:41,757 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 11:20:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 11:20:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 11:20:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 11:20:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 11:20:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 11:20:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 11:20:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 11:20:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 11:20:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 11:20:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 11:20:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 11:20:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 11:20:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 11:20:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 11:20:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 11:20:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 11:20:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 11:20:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 11:20:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 11:20:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 11:20:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 11:20:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 11:20:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 11:20:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 11:20:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 11:20:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 11:20:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 11:20:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 11:20:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 11:20:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 11:20:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 11:20:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 11:20:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 11:20:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 11:20:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:20:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 11:20:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 11:20:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 11:20:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 11:20:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 11:20:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 11:20:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 11:20:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 11:20:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 11:20:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 11:20:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 11:20:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 11:20:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 11:20:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 11:20:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 11:20:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 11:20:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 11:20:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 11:20:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 11:20:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 11:20:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 11:20:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 11:20:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 11:20:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 11:20:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 11:20:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 11:20:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 11:20:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 11:20:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 11:20:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 11:20:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 11:20:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 11:20:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 11:20:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 11:20:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 11:20:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 11:20:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 11:20:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 11:20:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 11:20:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 11:20:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 11:20:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 11:20:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 11:20:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:20:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:20:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:20:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 11:20:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:20:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 11:20:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 11:20:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:20:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:20:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:20:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:20:42,301 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:20:42,301 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-07 11:20:42,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:20:42 BoogieIcfgContainer [2020-07-07 11:20:42,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:20:42,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:20:42,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:20:42,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:20:42,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:20:41" (1/3) ... [2020-07-07 11:20:42,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29943887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:20:42, skipping insertion in model container [2020-07-07 11:20:42,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:41" (2/3) ... [2020-07-07 11:20:42,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29943887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:20:42, skipping insertion in model container [2020-07-07 11:20:42,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:20:42" (3/3) ... [2020-07-07 11:20:42,313 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-07-07 11:20:42,323 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:20:42,330 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-07 11:20:42,342 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-07 11:20:42,360 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:20:42,361 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:20:42,361 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:20:42,361 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:20:42,363 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:20:42,363 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:20:42,364 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:20:42,364 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:20:42,382 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-07 11:20:42,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-07 11:20:42,388 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:42,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:42,389 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:42,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:42,394 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-07-07 11:20:42,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:42,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286156884] [2020-07-07 11:20:42,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:42,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286156884] [2020-07-07 11:20:42,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:42,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:20:42,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244581557] [2020-07-07 11:20:42,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:20:42,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:42,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:20:42,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:20:42,614 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-07-07 11:20:42,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:42,763 INFO L93 Difference]: Finished difference Result 67 states and 104 transitions. [2020-07-07 11:20:42,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:20:42,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-07 11:20:42,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:42,780 INFO L225 Difference]: With dead ends: 67 [2020-07-07 11:20:42,780 INFO L226 Difference]: Without dead ends: 31 [2020-07-07 11:20:42,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:20:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-07 11:20:42,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-07 11:20:42,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-07 11:20:42,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-07 11:20:42,836 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10 [2020-07-07 11:20:42,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:42,837 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-07 11:20:42,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:20:42,837 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-07 11:20:42,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-07 11:20:42,838 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:42,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:42,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:20:42,839 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:42,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:42,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1556669446, now seen corresponding path program 1 times [2020-07-07 11:20:42,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:42,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267790465] [2020-07-07 11:20:42,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:43,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267790465] [2020-07-07 11:20:43,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:43,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:20:43,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874997157] [2020-07-07 11:20:43,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:20:43,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:43,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:20:43,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:20:43,004 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 5 states. [2020-07-07 11:20:43,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:43,117 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-07-07 11:20:43,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:20:43,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-07 11:20:43,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:43,119 INFO L225 Difference]: With dead ends: 37 [2020-07-07 11:20:43,119 INFO L226 Difference]: Without dead ends: 35 [2020-07-07 11:20:43,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:20:43,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-07 11:20:43,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-07-07 11:20:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-07 11:20:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-07 11:20:43,127 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2020-07-07 11:20:43,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:43,127 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-07 11:20:43,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:20:43,127 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-07 11:20:43,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-07 11:20:43,128 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:43,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:43,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:20:43,129 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:43,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:43,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-07-07 11:20:43,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:43,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163012383] [2020-07-07 11:20:43,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:43,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163012383] [2020-07-07 11:20:43,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:43,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 11:20:43,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103237306] [2020-07-07 11:20:43,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 11:20:43,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:43,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 11:20:43,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:20:43,296 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 7 states. [2020-07-07 11:20:43,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:43,519 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-07-07 11:20:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 11:20:43,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-07-07 11:20:43,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:43,520 INFO L225 Difference]: With dead ends: 61 [2020-07-07 11:20:43,521 INFO L226 Difference]: Without dead ends: 59 [2020-07-07 11:20:43,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:20:43,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-07 11:20:43,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 39. [2020-07-07 11:20:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-07 11:20:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-07-07 11:20:43,530 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 14 [2020-07-07 11:20:43,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:43,531 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-07-07 11:20:43,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 11:20:43,531 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-07-07 11:20:43,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:20:43,532 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:43,532 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:43,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:20:43,533 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:43,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:43,533 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-07-07 11:20:43,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:43,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666108843] [2020-07-07 11:20:43,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:43,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666108843] [2020-07-07 11:20:43,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946217695] [2020-07-07 11:20:43,900 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 [2020-07-07 11:20:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:44,028 INFO L264 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-07 11:20:44,037 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:20:44,145 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-07 11:20:44,146 INFO L384 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 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-07 11:20:44,147 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:44,156 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:44,162 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2020-07-07 11:20:44,163 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:44,177 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:44,178 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-07 11:20:44,179 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:26 [2020-07-07 11:20:44,253 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:44,253 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-07 11:20:44,255 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:44,299 INFO L624 ElimStorePlain]: treesize reduction 14, result has 80.3 percent of original size [2020-07-07 11:20:44,306 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-07 11:20:44,323 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:44,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-07 11:20:44,331 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20 [2020-07-07 11:20:44,332 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:44,344 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:44,346 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:20:44,346 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:59, output treesize:24 [2020-07-07 11:20:44,419 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:44,420 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-07 11:20:44,421 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:44,448 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:44,450 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_29|, |v_#memory_int_30|], 4=[|v_#memory_int_32|]} [2020-07-07 11:20:44,453 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-07 11:20:44,475 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:44,478 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-07 11:20:44,495 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:44,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-07 11:20:44,520 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-07-07 11:20:44,521 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2020-07-07 11:20:44,522 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:44,539 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:44,543 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-07 11:20:44,543 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:77, output treesize:40 [2020-07-07 11:20:44,652 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2020-07-07 11:20:44,653 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:44,660 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:44,661 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:20:44,661 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2020-07-07 11:20:44,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:44,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:20:44,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2020-07-07 11:20:44,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952339091] [2020-07-07 11:20:44,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 11:20:44,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:44,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 11:20:44,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-07-07 11:20:44,667 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 13 states. [2020-07-07 11:20:55,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:55,591 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-07-07 11:20:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 11:20:55,592 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2020-07-07 11:20:55,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:55,593 INFO L225 Difference]: With dead ends: 66 [2020-07-07 11:20:55,593 INFO L226 Difference]: Without dead ends: 64 [2020-07-07 11:20:55,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2020-07-07 11:20:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-07 11:20:55,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 27. [2020-07-07 11:20:55,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-07 11:20:55,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-07-07 11:20:55,600 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-07-07 11:20:55,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:55,601 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-07-07 11:20:55,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 11:20:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-07-07 11:20:55,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 11:20:55,602 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:55,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:55,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:20:55,816 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:55,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:55,817 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-07-07 11:20:55,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:55,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934295607] [2020-07-07 11:20:55,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:55,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934295607] [2020-07-07 11:20:55,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:55,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:20:55,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508451086] [2020-07-07 11:20:55,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:20:55,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:55,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:20:55,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:20:55,907 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 6 states. [2020-07-07 11:20:56,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:56,013 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-07-07 11:20:56,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:20:56,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-07 11:20:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:56,015 INFO L225 Difference]: With dead ends: 42 [2020-07-07 11:20:56,015 INFO L226 Difference]: Without dead ends: 30 [2020-07-07 11:20:56,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:20:56,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-07 11:20:56,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-07-07 11:20:56,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-07 11:20:56,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-07 11:20:56,025 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2020-07-07 11:20:56,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:56,025 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-07 11:20:56,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:20:56,026 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-07 11:20:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 11:20:56,028 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:56,028 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:56,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 11:20:56,029 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:56,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:56,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-07-07 11:20:56,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:56,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3897039] [2020-07-07 11:20:56,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:56,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3897039] [2020-07-07 11:20:56,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287379567] [2020-07-07 11:20:56,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:20:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:56,302 INFO L264 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-07 11:20:56,306 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:20:56,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-07 11:20:56,371 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-07-07 11:20:56,372 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2020-07-07 11:20:56,373 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:56,423 INFO L624 ElimStorePlain]: treesize reduction 16, result has 81.4 percent of original size [2020-07-07 11:20:56,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-07 11:20:56,474 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-07-07 11:20:56,475 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2020-07-07 11:20:56,476 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:56,529 INFO L624 ElimStorePlain]: treesize reduction 16, result has 79.7 percent of original size [2020-07-07 11:20:56,530 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:20:56,532 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:77, output treesize:63 [2020-07-07 11:20:56,631 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-07 11:20:56,639 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-07 11:20:56,656 INFO L384 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 19 treesize of output 7 [2020-07-07 11:20:56,656 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:56,674 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:56,674 INFO L384 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-07-07 11:20:56,675 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:56,680 INFO L384 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 15 treesize of output 7 [2020-07-07 11:20:56,680 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:56,728 INFO L624 ElimStorePlain]: treesize reduction 12, result has 84.6 percent of original size [2020-07-07 11:20:56,732 INFO L384 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 15 treesize of output 7 [2020-07-07 11:20:56,732 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:56,761 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:56,761 INFO L384 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-07-07 11:20:56,762 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:56,766 INFO L384 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 19 treesize of output 7 [2020-07-07 11:20:56,767 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:56,779 INFO L624 ElimStorePlain]: treesize reduction 20, result has 25.9 percent of original size [2020-07-07 11:20:56,780 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:20:56,780 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:110, output treesize:7 [2020-07-07 11:20:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:56,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:20:56,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2020-07-07 11:20:56,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443487399] [2020-07-07 11:20:56,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 11:20:56,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:56,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 11:20:56,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-07-07 11:20:56,805 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 11 states. [2020-07-07 11:20:57,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:57,276 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-07-07 11:20:57,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 11:20:57,276 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-07-07 11:20:57,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:57,277 INFO L225 Difference]: With dead ends: 57 [2020-07-07 11:20:57,277 INFO L226 Difference]: Without dead ends: 35 [2020-07-07 11:20:57,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-07-07 11:20:57,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-07 11:20:57,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-07-07 11:20:57,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-07 11:20:57,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-07 11:20:57,283 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-07-07 11:20:57,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:57,284 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-07 11:20:57,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 11:20:57,284 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-07 11:20:57,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 11:20:57,285 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:57,285 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:57,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:20:57,497 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:57,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:57,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-07-07 11:20:57,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:57,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90178841] [2020-07-07 11:20:57,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:57,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:57,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90178841] [2020-07-07 11:20:57,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889465467] [2020-07-07 11:20:57,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:20:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:57,863 INFO L264 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 53 conjunts are in the unsatisfiable core [2020-07-07 11:20:57,867 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:20:57,889 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-07 11:20:57,889 INFO L384 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 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-07 11:20:57,890 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:57,899 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:57,900 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:20:57,900 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:23 [2020-07-07 11:20:57,969 INFO L350 Elim1Store]: treesize reduction 8, result has 87.3 percent of original size [2020-07-07 11:20:57,970 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 69 [2020-07-07 11:20:57,971 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:58,037 INFO L624 ElimStorePlain]: treesize reduction 28, result has 75.7 percent of original size [2020-07-07 11:20:58,051 INFO L384 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 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-07 11:20:58,052 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:58,109 INFO L624 ElimStorePlain]: treesize reduction 4, result has 94.6 percent of original size [2020-07-07 11:20:58,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-07 11:20:58,114 INFO L384 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 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-07 11:20:58,114 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:58,143 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:58,143 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:20:58,144 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:85, output treesize:57 [2020-07-07 11:20:58,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-07 11:20:58,340 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:58,341 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 49 [2020-07-07 11:20:58,342 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:58,439 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:58,442 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_33|, |v_#memory_int_35|], 2=[|v_#memory_int_34|], 4=[|v_#memory_$Pointer$.base_25|, |v_#memory_$Pointer$.base_27|, |v_#memory_$Pointer$.offset_25|, |v_#memory_$Pointer$.offset_27|]} [2020-07-07 11:20:58,446 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:58,536 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:58,551 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2020-07-07 11:20:58,552 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:58,638 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:58,649 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2020-07-07 11:20:58,650 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:58,721 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:58,727 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-07 11:20:58,782 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:58,902 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-07-07 11:20:58,904 INFO L350 Elim1Store]: treesize reduction 124, result has 41.2 percent of original size [2020-07-07 11:20:58,904 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 180 treesize of output 161 [2020-07-07 11:20:58,907 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[10, 3, 2, 1] term [2020-07-07 11:20:58,908 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-07-07 11:20:58,909 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:59,000 INFO L624 ElimStorePlain]: treesize reduction 82, result has 65.5 percent of original size [2020-07-07 11:20:59,006 INFO L544 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-07 11:20:59,038 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:59,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-07 11:20:59,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-07 11:20:59,047 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 43 [2020-07-07 11:20:59,048 INFO L544 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:59,074 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:59,077 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 7 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-07 11:20:59,077 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 11 variables, input treesize:272, output treesize:89 [2020-07-07 11:20:59,189 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2020-07-07 11:20:59,189 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:59,201 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:59,203 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-07 11:20:59,203 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:100, output treesize:74 [2020-07-07 11:20:59,898 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:59,899 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 61 [2020-07-07 11:20:59,902 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-07 11:20:59,903 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-07-07 11:20:59,903 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-07 11:20:59,904 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:59,924 INFO L624 ElimStorePlain]: treesize reduction 36, result has 20.0 percent of original size [2020-07-07 11:20:59,924 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:20:59,925 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:75, output treesize:4 [2020-07-07 11:20:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:59,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:20:59,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2020-07-07 11:20:59,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840269889] [2020-07-07 11:20:59,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 11:20:59,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:59,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 11:20:59,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=175, Unknown=1, NotChecked=0, Total=210 [2020-07-07 11:20:59,934 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 15 states. [2020-07-07 11:21:00,413 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-07-07 11:21:00,791 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-07-07 11:21:01,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:21:01,542 INFO L93 Difference]: Finished difference Result 121 states and 137 transitions. [2020-07-07 11:21:01,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 11:21:01,543 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2020-07-07 11:21:01,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:21:01,545 INFO L225 Difference]: With dead ends: 121 [2020-07-07 11:21:01,545 INFO L226 Difference]: Without dead ends: 119 [2020-07-07 11:21:01,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=171, Invalid=758, Unknown=1, NotChecked=0, Total=930 [2020-07-07 11:21:01,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-07 11:21:01,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 49. [2020-07-07 11:21:01,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-07-07 11:21:01,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-07-07 11:21:01,557 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 24 [2020-07-07 11:21:01,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:21:01,558 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-07-07 11:21:01,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 11:21:01,558 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-07-07 11:21:01,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 11:21:01,559 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:21:01,559 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:21:01,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:21:01,773 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:21:01,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:21:01,774 INFO L82 PathProgramCache]: Analyzing trace with hash -2050422112, now seen corresponding path program 1 times [2020-07-07 11:21:01,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:21:01,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660135896] [2020-07-07 11:21:01,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:21:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:21:02,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660135896] [2020-07-07 11:21:02,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428412902] [2020-07-07 11:21:02,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:21:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:02,229 INFO L264 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-07 11:21:02,230 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:21:02,256 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-07 11:21:02,257 INFO L384 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 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-07 11:21:02,257 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:21:02,265 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:21:02,266 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-07 11:21:02,266 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:17 [2020-07-07 11:21:02,316 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:21:02,317 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 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 [2020-07-07 11:21:02,318 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:21:02,319 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:21:02,330 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:21:02,336 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-07 11:21:02,336 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-07 11:21:02,347 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:21:02,351 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-07 11:21:02,351 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-07 11:21:02,361 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:21:02,362 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:21:02,362 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:65, output treesize:19 [2020-07-07 11:21:02,392 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_36|], 2=[|v_#memory_$Pointer$.offset_29|, |v_#memory_$Pointer$.base_29|]} [2020-07-07 11:21:02,397 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2020-07-07 11:21:02,398 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:21:02,407 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:21:02,412 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 78 [2020-07-07 11:21:02,412 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-07 11:21:02,419 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:21:02,439 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:21:02,440 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 97 [2020-07-07 11:21:02,441 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 2, 1] term [2020-07-07 11:21:02,442 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-07 11:21:02,443 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-07 11:21:02,453 INFO L624 ElimStorePlain]: treesize reduction 40, result has 39.4 percent of original size [2020-07-07 11:21:02,453 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:21:02,453 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:112, output treesize:26 [2020-07-07 11:21:02,524 INFO L384 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 33 treesize of output 21 [2020-07-07 11:21:02,525 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:21:02,531 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:21:02,537 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2020-07-07 11:21:02,538 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-07 11:21:02,541 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:21:02,542 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:21:02,542 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:9 [2020-07-07 11:21:02,568 INFO L384 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 19 treesize of output 7 [2020-07-07 11:21:02,569 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:21:02,570 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:21:02,570 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:21:02,570 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-07 11:21:02,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:21:02,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:21:02,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2020-07-07 11:21:02,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488948170] [2020-07-07 11:21:02,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-07 11:21:02,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:21:02,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-07 11:21:02,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-07-07 11:21:02,599 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 19 states. [2020-07-07 11:21:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:21:03,561 INFO L93 Difference]: Finished difference Result 88 states and 100 transitions. [2020-07-07 11:21:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 11:21:03,561 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 24 [2020-07-07 11:21:03,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:21:03,564 INFO L225 Difference]: With dead ends: 88 [2020-07-07 11:21:03,564 INFO L226 Difference]: Without dead ends: 76 [2020-07-07 11:21:03,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2020-07-07 11:21:03,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-07 11:21:03,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 58. [2020-07-07 11:21:03,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-07 11:21:03,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2020-07-07 11:21:03,578 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 24 [2020-07-07 11:21:03,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:21:03,579 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2020-07-07 11:21:03,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-07 11:21:03,579 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2020-07-07 11:21:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 11:21:03,580 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:21:03,580 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:21:03,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:21:03,789 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:21:03,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:21:03,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1509760762, now seen corresponding path program 1 times [2020-07-07 11:21:03,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:21:03,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347591216] [2020-07-07 11:21:03,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:21:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:21:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:21:03,878 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 11:21:03,878 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 11:21:03,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 11:21:03,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:21:03 BoogieIcfgContainer [2020-07-07 11:21:03,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:21:03,959 INFO L168 Benchmark]: Toolchain (without parser) took 22946.14 ms. Allocated memory was 142.6 MB in the beginning and 336.1 MB in the end (delta: 193.5 MB). Free memory was 99.4 MB in the beginning and 94.1 MB in the end (delta: 5.3 MB). Peak memory consumption was 198.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:21:03,962 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 142.6 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 11:21:03,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.90 ms. Allocated memory was 142.6 MB in the beginning and 198.2 MB in the end (delta: 55.6 MB). Free memory was 99.1 MB in the beginning and 164.6 MB in the end (delta: -65.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:21:03,963 INFO L168 Benchmark]: Boogie Preprocessor took 60.79 ms. Allocated memory is still 198.2 MB. Free memory was 164.6 MB in the beginning and 161.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:21:03,964 INFO L168 Benchmark]: RCFGBuilder took 612.90 ms. Allocated memory is still 198.2 MB. Free memory was 161.8 MB in the beginning and 114.2 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:21:03,964 INFO L168 Benchmark]: TraceAbstraction took 21651.24 ms. Allocated memory was 198.2 MB in the beginning and 336.1 MB in the end (delta: 137.9 MB). Free memory was 114.2 MB in the beginning and 94.1 MB in the end (delta: 20.2 MB). Peak memory consumption was 158.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:21:03,968 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 142.6 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 616.90 ms. Allocated memory was 142.6 MB in the beginning and 198.2 MB in the end (delta: 55.6 MB). Free memory was 99.1 MB in the beginning and 164.6 MB in the end (delta: -65.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.79 ms. Allocated memory is still 198.2 MB. Free memory was 164.6 MB in the beginning and 161.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 612.90 ms. Allocated memory is still 198.2 MB. Free memory was 161.8 MB in the beginning and 114.2 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21651.24 ms. Allocated memory was 198.2 MB in the beginning and 336.1 MB in the end (delta: 137.9 MB). Free memory was 114.2 MB in the beginning and 94.1 MB in the end (delta: 20.2 MB). Peak memory consumption was 158.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1039]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* null = malloc(sizeof(SLL)); [L995] null->colour = BLACK [L996] null->next = ((void*)0) [L998] SLL* list = malloc(sizeof(SLL)); [L999] list->next = null [L1000] list->colour = BLACK [L1002] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, null={-2:0}] [L1005] COND TRUE __VERIFIER_nondet_int() [L1008] end->next = malloc(sizeof(SLL)) [L1009] EXPR end->next [L1009] end = end->next [L1010] end->next = null [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1018] end->colour = RED [L1019] end->next = malloc(sizeof(SLL)) [L1020] EXPR end->next [L1020] end = end->next [L1021] end->next = null [L1022] end->colour = BLACK VAL [end={-4:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1026] end = null [L1027] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] [L1030] COND FALSE !(!(null != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] [L1031] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] [L1031] COND FALSE !(!(BLACK == end->colour)) [L1033] COND TRUE null != end [L1035] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] [L1035] COND FALSE !(RED == end->colour) [L1042] EXPR end->next [L1042] end = end->next [L1033] COND TRUE null != end [L1035] EXPR end->colour VAL [end={-3:0}, end->colour=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] [L1035] COND TRUE RED == end->colour [L1037] EXPR end->next [L1037] end = end->next [L1038] COND FALSE !(!(null != end)) VAL [end={-4:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] [L1039] EXPR end->colour VAL [end={-4:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] [L1039] COND TRUE !(BLACK != end->colour) [L1039] __VERIFIER_error() VAL [end={-4:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.5s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 208 SDtfs, 447 SDslu, 1019 SDs, 0 SdLazy, 1306 SolverSat, 176 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 11.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 85 SyntacticMatches, 5 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 156 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 213 ConstructedInterpolants, 19 QuantifiedInterpolants, 90645 SizeOfPredicates, 54 NumberOfNonLiveVariables, 494 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 1/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...