/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 0.1.25-72570d3 [2020-08-22 16:47:52,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:47:52,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:47:52,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:47:52,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:47:52,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:47:52,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:47:52,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:47:52,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:47:52,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:47:52,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:47:52,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:47:52,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:47:52,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:47:52,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:47:52,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:47:52,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:47:52,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:47:52,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:47:52,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:47:52,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:47:52,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:47:52,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:47:52,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:47:52,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 16:47:52,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 16:47:52,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 16:47:52,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 16:47:52,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 16:47:52,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 16:47:52,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 16:47:52,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 16:47:52,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 16:47:52,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 16:47:52,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 16:47:52,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 16:47:52,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 16:47:52,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 16:47:52,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:47:52,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:47:52,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:47:52,716 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 [2020-08-22 16:47:52,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:47:52,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:47:52,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:47:52,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:47:52,754 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:47:52,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:47:52,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:47:52,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:47:52,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:47:52,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:47:52,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:47:52,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:47:52,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:47:52,757 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:47:52,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:47:52,758 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:47:52,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:47:52,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:47:52,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:47:52,759 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:47:52,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:47:52,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:47:52,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:47:52,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:47:52,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:47:52,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:47:52,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:47:52,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:47:52,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:47:52,761 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:47:53,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:47:53,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:47:53,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:47:53,083 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:47:53,083 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:47:53,084 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-08-22 16:47:53,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e54d6d3e0/e0bc1bd878804344b694cd4787a2218b/FLAG22309f134 [2020-08-22 16:47:53,669 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:47:53,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-08-22 16:47:53,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e54d6d3e0/e0bc1bd878804344b694cd4787a2218b/FLAG22309f134 [2020-08-22 16:47:53,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e54d6d3e0/e0bc1bd878804344b694cd4787a2218b [2020-08-22 16:47:53,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:47:53,961 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:47:53,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:47:53,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:47:53,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:47:53,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:47:53" (1/1) ... [2020-08-22 16:47:53,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af20ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:53, skipping insertion in model container [2020-08-22 16:47:53,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:47:53" (1/1) ... [2020-08-22 16:47:53,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:47:54,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:47:54,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:47:54,524 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:47:54,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:47:54,639 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:47:54,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:54 WrapperNode [2020-08-22 16:47:54,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:47:54,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:47:54,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:47:54,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:47:54,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:54" (1/1) ... [2020-08-22 16:47:54,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:54" (1/1) ... [2020-08-22 16:47:54,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:54" (1/1) ... [2020-08-22 16:47:54,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:54" (1/1) ... [2020-08-22 16:47:54,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:54" (1/1) ... [2020-08-22 16:47:54,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:54" (1/1) ... [2020-08-22 16:47:54,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:54" (1/1) ... [2020-08-22 16:47:54,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:47:54,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:47:54,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:47:54,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:47:54,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:54" (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 [2020-08-22 16:47:54,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:47:54,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:47:54,757 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:47:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 16:47:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 16:47:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 16:47:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 16:47:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 16:47:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 16:47:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 16:47:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 16:47:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 16:47:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 16:47:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 16:47:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 16:47:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 16:47:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 16:47:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 16:47:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 16:47:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 16:47:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 16:47:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 16:47:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 16:47:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 16:47:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 16:47:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 16:47:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 16:47:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 16:47:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 16:47:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 16:47:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 16:47:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 16:47:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 16:47:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 16:47:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 16:47:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 16:47:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 16:47:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 16:47:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 16:47:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 16:47:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 16:47:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 16:47:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 16:47:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 16:47:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 16:47:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 16:47:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 16:47:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 16:47:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 16:47:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 16:47:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 16:47:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 16:47:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 16:47:54,765 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:47:54,765 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 16:47:54,765 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 16:47:54,765 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 16:47:54,765 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 16:47:54,765 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 16:47:54,765 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 16:47:54,766 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 16:47:54,766 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 16:47:54,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:47:54,766 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 16:47:54,766 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 16:47:54,766 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 16:47:54,766 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 16:47:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 16:47:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 16:47:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 16:47:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 16:47:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 16:47:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 16:47:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 16:47:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 16:47:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 16:47:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 16:47:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 16:47:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 16:47:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 16:47:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 16:47:54,769 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 16:47:54,769 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 16:47:54,769 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 16:47:54,769 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 16:47:54,769 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 16:47:54,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 16:47:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 16:47:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 16:47:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 16:47:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 16:47:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 16:47:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 16:47:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 16:47:54,771 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 16:47:54,771 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 16:47:54,771 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 16:47:54,771 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 16:47:54,771 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 16:47:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 16:47:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 16:47:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 16:47:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 16:47:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 16:47:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 16:47:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 16:47:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:47:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:47:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:47:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:47:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:47:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 16:47:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 16:47:54,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:47:54,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:47:54,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:47:54,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:47:55,333 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:47:55,333 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-08-22 16:47:55,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:47:55 BoogieIcfgContainer [2020-08-22 16:47:55,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:47:55,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:47:55,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:47:55,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:47:55,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:47:53" (1/3) ... [2020-08-22 16:47:55,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545e15bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:47:55, skipping insertion in model container [2020-08-22 16:47:55,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:54" (2/3) ... [2020-08-22 16:47:55,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545e15bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:47:55, skipping insertion in model container [2020-08-22 16:47:55,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:47:55" (3/3) ... [2020-08-22 16:47:55,346 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-08-22 16:47:55,357 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:47:55,365 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-08-22 16:47:55,379 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-08-22 16:47:55,404 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:47:55,404 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:47:55,405 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:47:55,405 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:47:55,405 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:47:55,405 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:47:55,406 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:47:55,406 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:47:55,425 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-08-22 16:47:55,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-22 16:47:55,432 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:55,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:55,433 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:55,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:55,439 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-08-22 16:47:55,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:55,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882709051] [2020-08-22 16:47:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:55,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:55,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882709051] [2020-08-22 16:47:55,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:55,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:47:55,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230629958] [2020-08-22 16:47:55,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:47:55,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:55,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:47:55,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:47:55,665 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-08-22 16:47:55,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:55,792 INFO L93 Difference]: Finished difference Result 67 states and 104 transitions. [2020-08-22 16:47:55,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:47:55,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-08-22 16:47:55,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:55,805 INFO L225 Difference]: With dead ends: 67 [2020-08-22 16:47:55,805 INFO L226 Difference]: Without dead ends: 31 [2020-08-22 16:47:55,809 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 [2020-08-22 16:47:55,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-22 16:47:55,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-22 16:47:55,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-22 16:47:55,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-08-22 16:47:55,869 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10 [2020-08-22 16:47:55,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:55,870 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-08-22 16:47:55,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:47:55,870 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-08-22 16:47:55,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-22 16:47:55,871 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:55,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:55,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:47:55,872 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:55,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:55,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1556669446, now seen corresponding path program 1 times [2020-08-22 16:47:55,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:55,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658540158] [2020-08-22 16:47:55,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:55,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:55,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:55,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658540158] [2020-08-22 16:47:55,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:55,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:47:55,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049528292] [2020-08-22 16:47:55,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:47:55,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:55,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:47:55,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:55,991 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 5 states. [2020-08-22 16:47:56,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:56,101 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-08-22 16:47:56,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:47:56,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-08-22 16:47:56,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:56,103 INFO L225 Difference]: With dead ends: 37 [2020-08-22 16:47:56,103 INFO L226 Difference]: Without dead ends: 35 [2020-08-22 16:47:56,105 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 [2020-08-22 16:47:56,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-22 16:47:56,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-08-22 16:47:56,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-22 16:47:56,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-08-22 16:47:56,111 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2020-08-22 16:47:56,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:56,112 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-08-22 16:47:56,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:47:56,112 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-08-22 16:47:56,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 16:47:56,113 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:56,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:56,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:47:56,113 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:56,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:56,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-08-22 16:47:56,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:56,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551270184] [2020-08-22 16:47:56,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:56,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:56,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551270184] [2020-08-22 16:47:56,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:56,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:47:56,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847129395] [2020-08-22 16:47:56,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:47:56,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:56,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:47:56,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:47:56,227 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-08-22 16:47:56,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:56,386 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-08-22 16:47:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:47:56,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-08-22 16:47:56,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:56,388 INFO L225 Difference]: With dead ends: 54 [2020-08-22 16:47:56,388 INFO L226 Difference]: Without dead ends: 52 [2020-08-22 16:47:56,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:47:56,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-22 16:47:56,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2020-08-22 16:47:56,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-22 16:47:56,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-08-22 16:47:56,397 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14 [2020-08-22 16:47:56,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:56,398 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-08-22 16:47:56,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:47:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-08-22 16:47:56,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 16:47:56,399 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:56,399 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:56,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:47:56,399 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:56,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:56,400 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-08-22 16:47:56,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:56,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725031680] [2020-08-22 16:47:56,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:56,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:56,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725031680] [2020-08-22 16:47:56,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925102052] [2020-08-22 16:47:56,622 INFO L95 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 [2020-08-22 16:47:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:56,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 32 conjunts are in the unsatisfiable core [2020-08-22 16:47:56,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:47:56,900 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-08-22 16:47:56,902 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2020-08-22 16:47:56,904 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:56,923 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:56,932 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 13 treesize of output 9 [2020-08-22 16:47:56,932 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:56,948 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:56,959 INFO L545 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. [2020-08-22 16:47:56,960 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:30 [2020-08-22 16:47:57,113 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:57,114 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2020-08-22 16:47:57,116 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:57,204 INFO L625 ElimStorePlain]: treesize reduction 28, result has 71.4 percent of original size [2020-08-22 16:47:57,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:47:57,223 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-08-22 16:47:57,224 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:57,246 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:57,251 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-08-22 16:47:57,252 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:57,270 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:57,275 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-08-22 16:47:57,275 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:68, output treesize:37 [2020-08-22 16:47:57,418 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:57,419 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 37 [2020-08-22 16:47:57,420 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:57,462 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:57,466 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_30|, |v_#memory_int_29|], 4=[|v_#memory_int_32|]} [2020-08-22 16:47:57,472 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-08-22 16:47:57,501 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:57,505 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-08-22 16:47:57,531 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:57,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:47:57,555 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-08-22 16:47:57,556 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 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 [2020-08-22 16:47:57,557 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:57,580 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:57,591 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-08-22 16:47:57,591 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 9 variables, input treesize:90, output treesize:40 [2020-08-22 16:47:57,747 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 [2020-08-22 16:47:57,749 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:57,756 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:57,758 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:47:57,759 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2020-08-22 16:47:57,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:57,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:47:57,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2020-08-22 16:47:57,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801095701] [2020-08-22 16:47:57,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 16:47:57,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:57,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 16:47:57,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-08-22 16:47:57,765 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 12 states. [2020-08-22 16:48:02,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:48:02,496 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-08-22 16:48:02,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 16:48:02,496 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-08-22 16:48:02,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:48:02,498 INFO L225 Difference]: With dead ends: 62 [2020-08-22 16:48:02,498 INFO L226 Difference]: Without dead ends: 60 [2020-08-22 16:48:02,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-08-22 16:48:02,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-22 16:48:02,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 27. [2020-08-22 16:48:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-22 16:48:02,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-08-22 16:48:02,505 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-08-22 16:48:02,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:48:02,506 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-08-22 16:48:02,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 16:48:02,506 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-08-22 16:48:02,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 16:48:02,507 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:48:02,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:48:02,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:48:02,722 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:48:02,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:48:02,723 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-08-22 16:48:02,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:48:02,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731237087] [2020-08-22 16:48:02,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:48:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:48:02,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:48:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:48:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:48:02,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731237087] [2020-08-22 16:48:02,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:48:02,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:48:02,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581449719] [2020-08-22 16:48:02,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:48:02,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:48:02,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:48:02,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:48:02,836 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 6 states. [2020-08-22 16:48:02,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:48:02,965 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-08-22 16:48:02,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:48:02,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-22 16:48:02,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:48:02,966 INFO L225 Difference]: With dead ends: 42 [2020-08-22 16:48:02,966 INFO L226 Difference]: Without dead ends: 30 [2020-08-22 16:48:02,967 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 [2020-08-22 16:48:02,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-22 16:48:02,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-08-22 16:48:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-22 16:48:02,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-08-22 16:48:02,972 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2020-08-22 16:48:02,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:48:02,972 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-08-22 16:48:02,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:48:02,973 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-08-22 16:48:02,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 16:48:02,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:48:02,974 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] [2020-08-22 16:48:02,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 16:48:02,974 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:48:02,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:48:02,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-08-22 16:48:02,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:48:02,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262341735] [2020-08-22 16:48:02,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:48:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:48:03,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:48:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:48:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:48:03,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262341735] [2020-08-22 16:48:03,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802387463] [2020-08-22 16:48:03,038 INFO L95 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 [2020-08-22 16:48:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:48:03,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-08-22 16:48:03,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:48:03,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:48:03,196 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-08-22 16:48:03,196 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 [2020-08-22 16:48:03,197 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:03,258 INFO L625 ElimStorePlain]: treesize reduction 16, result has 81.4 percent of original size [2020-08-22 16:48:03,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:48:03,320 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-08-22 16:48:03,320 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 [2020-08-22 16:48:03,322 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:03,384 INFO L625 ElimStorePlain]: treesize reduction 16, result has 79.7 percent of original size [2020-08-22 16:48:03,384 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:48:03,385 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:77, output treesize:63 [2020-08-22 16:48:03,491 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-08-22 16:48:03,494 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-08-22 16:48:03,504 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 [2020-08-22 16:48:03,505 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:03,523 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 [2020-08-22 16:48:03,524 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:03,534 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:03,535 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 [2020-08-22 16:48:03,536 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:03,582 INFO L625 ElimStorePlain]: treesize reduction 12, result has 84.6 percent of original size [2020-08-22 16:48:03,588 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 [2020-08-22 16:48:03,589 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:03,604 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:03,605 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 [2020-08-22 16:48:03,606 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:03,609 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 [2020-08-22 16:48:03,610 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:03,628 INFO L625 ElimStorePlain]: treesize reduction 20, result has 25.9 percent of original size [2020-08-22 16:48:03,629 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:48:03,629 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:110, output treesize:7 [2020-08-22 16:48:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:48:03,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:48:03,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2020-08-22 16:48:03,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956286311] [2020-08-22 16:48:03,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 16:48:03,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:48:03,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 16:48:03,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:48:03,639 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 8 states. [2020-08-22 16:48:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:48:03,902 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-08-22 16:48:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:48:03,903 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-08-22 16:48:03,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:48:03,904 INFO L225 Difference]: With dead ends: 53 [2020-08-22 16:48:03,904 INFO L226 Difference]: Without dead ends: 31 [2020-08-22 16:48:03,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:48:03,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-22 16:48:03,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-22 16:48:03,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-22 16:48:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-08-22 16:48:03,911 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-08-22 16:48:03,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:48:03,912 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-08-22 16:48:03,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 16:48:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-08-22 16:48:03,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 16:48:03,913 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:48:03,913 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] [2020-08-22 16:48:04,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:48:04,123 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:48:04,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:48:04,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-08-22 16:48:04,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:48:04,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558608886] [2020-08-22 16:48:04,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:48:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:48:04,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:48:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:48:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:48:04,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558608886] [2020-08-22 16:48:04,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411800265] [2020-08-22 16:48:04,432 INFO L95 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 [2020-08-22 16:48:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:48:04,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 52 conjunts are in the unsatisfiable core [2020-08-22 16:48:04,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:48:04,559 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-08-22 16:48:04,559 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2020-08-22 16:48:04,561 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:04,573 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:04,573 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:48:04,573 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:27 [2020-08-22 16:48:04,640 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:04,641 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2020-08-22 16:48:04,642 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:04,721 INFO L625 ElimStorePlain]: treesize reduction 28, result has 76.5 percent of original size [2020-08-22 16:48:04,726 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 27 treesize of output 15 [2020-08-22 16:48:04,727 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:04,771 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:04,776 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 27 treesize of output 15 [2020-08-22 16:48:04,777 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:04,826 INFO L625 ElimStorePlain]: treesize reduction 4, result has 93.8 percent of original size [2020-08-22 16:48:04,827 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:48:04,827 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:89, output treesize:61 [2020-08-22 16:48:05,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:48:05,102 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:05,103 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 41 [2020-08-22 16:48:05,104 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:05,184 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:05,194 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:05,194 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 1 case distinctions, treesize of input 209 treesize of output 150 [2020-08-22 16:48:05,196 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:05,346 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-08-22 16:48:05,348 INFO L625 ElimStorePlain]: treesize reduction 24, result has 89.5 percent of original size [2020-08-22 16:48:05,353 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-08-22 16:48:05,403 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:05,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:48:05,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:48:05,413 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 43 [2020-08-22 16:48:05,414 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:05,448 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:05,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:48:05,534 INFO L350 Elim1Store]: treesize reduction 33, result has 68.6 percent of original size [2020-08-22 16:48:05,534 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 104 treesize of output 107 [2020-08-22 16:48:05,539 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term [2020-08-22 16:48:05,539 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-08-22 16:48:05,550 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:05,619 INFO L625 ElimStorePlain]: treesize reduction 81, result has 51.5 percent of original size [2020-08-22 16:48:05,625 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-08-22 16:48:05,626 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:239, output treesize:93 [2020-08-22 16:48:05,781 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 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 [2020-08-22 16:48:05,782 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:05,794 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:05,797 INFO L545 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. [2020-08-22 16:48:05,797 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:104, output treesize:78 [2020-08-22 16:48:06,490 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:06,491 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 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 [2020-08-22 16:48:06,493 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-08-22 16:48:06,494 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-08-22 16:48:06,495 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-08-22 16:48:06,501 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:06,522 INFO L625 ElimStorePlain]: treesize reduction 36, result has 26.5 percent of original size [2020-08-22 16:48:06,524 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:48:06,524 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:79, output treesize:4 [2020-08-22 16:48:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:48:06,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:48:06,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2020-08-22 16:48:06,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054649427] [2020-08-22 16:48:06,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 16:48:06,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:48:06,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 16:48:06,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=193, Unknown=1, NotChecked=0, Total=240 [2020-08-22 16:48:06,537 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 16 states. [2020-08-22 16:48:07,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:48:07,313 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2020-08-22 16:48:07,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 16:48:07,314 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 24 [2020-08-22 16:48:07,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:48:07,318 INFO L225 Difference]: With dead ends: 91 [2020-08-22 16:48:07,318 INFO L226 Difference]: Without dead ends: 89 [2020-08-22 16:48:07,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=109, Invalid=442, Unknown=1, NotChecked=0, Total=552 [2020-08-22 16:48:07,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-08-22 16:48:07,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 46. [2020-08-22 16:48:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-22 16:48:07,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-08-22 16:48:07,329 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 24 [2020-08-22 16:48:07,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:48:07,329 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-08-22 16:48:07,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 16:48:07,330 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-08-22 16:48:07,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 16:48:07,330 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:48:07,331 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] [2020-08-22 16:48:07,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:48:07,545 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:48:07,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:48:07,545 INFO L82 PathProgramCache]: Analyzing trace with hash -2050422112, now seen corresponding path program 1 times [2020-08-22 16:48:07,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:48:07,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659406837] [2020-08-22 16:48:07,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:48:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:48:07,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:48:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:48:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:48:07,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659406837] [2020-08-22 16:48:07,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024803218] [2020-08-22 16:48:07,822 INFO L95 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 [2020-08-22 16:48:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:48:07,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 27 conjunts are in the unsatisfiable core [2020-08-22 16:48:07,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:48:07,946 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-08-22 16:48:07,947 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 [2020-08-22 16:48:07,947 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:07,956 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:07,957 INFO L545 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. [2020-08-22 16:48:07,957 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:17 [2020-08-22 16:48:08,014 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:08,015 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 [2020-08-22 16:48:08,016 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:48:08,018 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:08,029 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:08,036 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 [2020-08-22 16:48:08,037 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:08,047 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:08,079 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 [2020-08-22 16:48:08,080 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:08,092 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:08,095 INFO L545 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. [2020-08-22 16:48:08,096 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:65, output treesize:19 [2020-08-22 16:48:08,126 INFO L441 ElimStorePlain]: Different costs {0=[|v_#memory_int_33|], 2=[|v_#memory_$Pointer$.base_29|, |v_#memory_$Pointer$.offset_29|]} [2020-08-22 16:48:08,131 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 [2020-08-22 16:48:08,132 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:08,143 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:08,169 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:08,169 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 104 treesize of output 124 [2020-08-22 16:48:08,171 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-08-22 16:48:08,171 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-08-22 16:48:08,172 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:08,188 INFO L625 ElimStorePlain]: treesize reduction 40, result has 61.9 percent of original size [2020-08-22 16:48:08,191 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 57 treesize of output 47 [2020-08-22 16:48:08,192 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:08,197 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:08,197 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:48:08,198 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:112, output treesize:26 [2020-08-22 16:48:08,258 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 [2020-08-22 16:48:08,259 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:08,265 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:08,268 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 [2020-08-22 16:48:08,268 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:08,273 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:08,274 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:48:08,274 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:9 [2020-08-22 16:48:08,298 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 [2020-08-22 16:48:08,299 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:08,301 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:08,301 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:48:08,301 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-08-22 16:48:08,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:48:08,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:48:08,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2020-08-22 16:48:08,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979953731] [2020-08-22 16:48:08,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 16:48:08,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:48:08,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 16:48:08,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-08-22 16:48:08,330 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 19 states. [2020-08-22 16:48:09,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:48:09,150 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-08-22 16:48:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 16:48:09,151 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 24 [2020-08-22 16:48:09,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:48:09,151 INFO L225 Difference]: With dead ends: 84 [2020-08-22 16:48:09,152 INFO L226 Difference]: Without dead ends: 72 [2020-08-22 16:48:09,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2020-08-22 16:48:09,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-22 16:48:09,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2020-08-22 16:48:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-22 16:48:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-08-22 16:48:09,176 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 24 [2020-08-22 16:48:09,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:48:09,176 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-08-22 16:48:09,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 16:48:09,177 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-08-22 16:48:09,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 16:48:09,179 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:48:09,179 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] [2020-08-22 16:48:09,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:48:09,393 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:48:09,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:48:09,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1509760762, now seen corresponding path program 1 times [2020-08-22 16:48:09,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:48:09,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340085426] [2020-08-22 16:48:09,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:48:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:48:09,420 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:48:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:48:09,438 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:48:09,468 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:48:09,468 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:48:09,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 16:48:09,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:48:09 BoogieIcfgContainer [2020-08-22 16:48:09,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:48:09,513 INFO L168 Benchmark]: Toolchain (without parser) took 15552.65 ms. Allocated memory was 140.0 MB in the beginning and 303.0 MB in the end (delta: 163.1 MB). Free memory was 101.8 MB in the beginning and 103.5 MB in the end (delta: -1.7 MB). Peak memory consumption was 161.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:48:09,514 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 16:48:09,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.93 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.6 MB in the beginning and 169.0 MB in the end (delta: -67.3 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:48:09,515 INFO L168 Benchmark]: Boogie Preprocessor took 60.62 ms. Allocated memory is still 202.4 MB. Free memory was 169.0 MB in the beginning and 166.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:48:09,515 INFO L168 Benchmark]: RCFGBuilder took 636.35 ms. Allocated memory is still 202.4 MB. Free memory was 166.2 MB in the beginning and 119.1 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:48:09,516 INFO L168 Benchmark]: TraceAbstraction took 14173.31 ms. Allocated memory was 202.4 MB in the beginning and 303.0 MB in the end (delta: 100.7 MB). Free memory was 118.4 MB in the beginning and 103.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 115.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:48:09,518 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.93 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.6 MB in the beginning and 169.0 MB in the end (delta: -67.3 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.62 ms. Allocated memory is still 202.4 MB. Free memory was 169.0 MB in the beginning and 166.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 636.35 ms. Allocated memory is still 202.4 MB. Free memory was 166.2 MB in the beginning and 119.1 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14173.31 ms. Allocated memory was 202.4 MB in the beginning and 303.0 MB in the end (delta: 100.7 MB). Free memory was 118.4 MB in the beginning and 103.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 115.6 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))={-4:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-1:0}, 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))={-4:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-1:0}, null={-2:0}] [L1030] COND FALSE !(!(null != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-1:0}, null={-2:0}] [L1031] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-1:0}, 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))={-4:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-1:0}, 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))={-4:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-1:0}, 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))={-4:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-1:0}, null={-2:0}] [L1039] EXPR end->colour VAL [end={-4:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-1:0}, null={-2:0}] [L1039] COND TRUE !(BLACK != end->colour) [L1039] __VERIFIER_error() VAL [end={-4:0}, list={-1:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-3:0}, malloc(sizeof(SLL))={-1:0}, null={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.0s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 218 SDtfs, 359 SDslu, 815 SDs, 0 SdLazy, 1051 SolverSat, 145 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred 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, 114 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 213 ConstructedInterpolants, 22 QuantifiedInterpolants, 87040 SizeOfPredicates, 53 NumberOfNonLiveVariables, 494 ConjunctsInSsa, 122 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 2/24 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...