java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:06:50,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:06:50,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:06:50,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:06:50,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:06:50,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:06:50,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:06:50,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:06:50,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:06:50,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:06:50,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:06:50,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:06:50,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:06:50,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:06:50,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:06:50,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:06:50,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:06:50,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:06:50,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:06:50,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:06:50,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:06:50,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:06:50,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:06:50,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:06:50,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 22:06:50,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 22:06:50,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 22:06:50,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 22:06:50,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 22:06:50,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 22:06:50,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:06:50,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:06:50,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:06:50,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:06:50,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:06:50,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:06:50,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:06:50,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:06:50,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:06:50,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:06:50,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:06:50,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 22:06:50,687 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:06:50,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:06:50,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:06:50,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:06:50,692 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:06:50,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:06:50,693 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:06:50,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:06:50,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:06:50,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:06:50,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:06:50,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:06:50,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:06:50,696 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:06:50,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:06:50,696 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:06:50,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:06:50,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:06:50,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:06:50,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:06:50,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:06:50,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:06:50,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:06:50,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:06:50,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:06:50,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:06:50,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:06:50,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:06:50,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:06:50,998 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:06:51,021 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:06:51,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:06:51,027 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:06:51,027 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:06:51,028 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-reverse.i [2019-10-14 22:06:51,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bd11c3e1/fd9bf5e349584487ae1e451234472337/FLAGbb03c6bf5 [2019-10-14 22:06:51,569 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:06:51,570 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-reverse.i [2019-10-14 22:06:51,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bd11c3e1/fd9bf5e349584487ae1e451234472337/FLAGbb03c6bf5 [2019-10-14 22:06:51,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bd11c3e1/fd9bf5e349584487ae1e451234472337 [2019-10-14 22:06:51,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:06:51,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:06:51,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:06:51,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:06:51,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:06:51,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:06:51" (1/1) ... [2019-10-14 22:06:51,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b32364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:51, skipping insertion in model container [2019-10-14 22:06:51,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:06:51" (1/1) ... [2019-10-14 22:06:51,886 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:06:51,947 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:06:52,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:06:52,538 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:06:52,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:06:52,668 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:06:52,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:52 WrapperNode [2019-10-14 22:06:52,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:06:52,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:06:52,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:06:52,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:06:52,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:52" (1/1) ... [2019-10-14 22:06:52,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:52" (1/1) ... [2019-10-14 22:06:52,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:52" (1/1) ... [2019-10-14 22:06:52,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:52" (1/1) ... [2019-10-14 22:06:52,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:52" (1/1) ... [2019-10-14 22:06:52,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:52" (1/1) ... [2019-10-14 22:06:52,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:52" (1/1) ... [2019-10-14 22:06:52,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:06:52,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:06:52,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:06:52,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:06:52,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:06:52,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:06:52,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:06:52,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:06:52,795 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-14 22:06:52,795 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-14 22:06:52,795 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-14 22:06:52,796 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-14 22:06:52,796 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-14 22:06:52,796 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-14 22:06:52,796 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-14 22:06:52,796 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-14 22:06:52,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-14 22:06:52,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-14 22:06:52,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-14 22:06:52,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-14 22:06:52,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-14 22:06:52,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-14 22:06:52,798 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-14 22:06:52,798 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-14 22:06:52,798 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-14 22:06:52,798 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-14 22:06:52,798 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-14 22:06:52,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-14 22:06:52,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-14 22:06:52,799 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-14 22:06:52,799 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-14 22:06:52,799 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-14 22:06:52,799 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-14 22:06:52,799 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-14 22:06:52,800 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-14 22:06:52,800 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-14 22:06:52,800 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-14 22:06:52,800 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-14 22:06:52,800 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-14 22:06:52,800 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-14 22:06:52,801 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-14 22:06:52,801 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-14 22:06:52,801 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-14 22:06:52,801 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-14 22:06:52,801 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-14 22:06:52,802 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-14 22:06:52,802 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-14 22:06:52,802 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-14 22:06:52,802 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-14 22:06:52,802 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-14 22:06:52,802 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-14 22:06:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-14 22:06:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-14 22:06:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-14 22:06:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-14 22:06:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-14 22:06:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-14 22:06:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-14 22:06:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 22:06:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 22:06:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-14 22:06:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 22:06:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-14 22:06:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-14 22:06:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-14 22:06:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-14 22:06:52,805 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-14 22:06:52,805 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-14 22:06:52,805 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-14 22:06:52,805 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-14 22:06:52,805 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-14 22:06:52,805 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:06:52,805 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-14 22:06:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-14 22:06:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-14 22:06:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-14 22:06:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-14 22:06:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-14 22:06:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-14 22:06:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-14 22:06:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-14 22:06:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-14 22:06:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-14 22:06:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-14 22:06:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-14 22:06:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-14 22:06:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-14 22:06:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-14 22:06:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-14 22:06:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-14 22:06:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-14 22:06:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-14 22:06:52,809 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-14 22:06:52,809 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-14 22:06:52,809 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-14 22:06:52,809 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-14 22:06:52,809 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-14 22:06:52,809 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-14 22:06:52,809 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-14 22:06:52,810 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-14 22:06:52,810 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-14 22:06:52,810 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-14 22:06:52,810 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-14 22:06:52,810 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-14 22:06:52,810 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-14 22:06:52,811 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-14 22:06:52,811 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-14 22:06:52,811 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-14 22:06:52,811 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-14 22:06:52,811 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-14 22:06:52,811 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-14 22:06:52,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:06:52,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:06:52,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:06:52,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 22:06:52,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 22:06:52,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 22:06:52,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 22:06:52,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 22:06:52,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 22:06:52,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:06:52,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:06:53,430 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:06:53,430 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-10-14 22:06:53,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:06:53 BoogieIcfgContainer [2019-10-14 22:06:53,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:06:53,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:06:53,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:06:53,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:06:53,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:06:51" (1/3) ... [2019-10-14 22:06:53,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ddb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:06:53, skipping insertion in model container [2019-10-14 22:06:53,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:52" (2/3) ... [2019-10-14 22:06:53,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ddb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:06:53, skipping insertion in model container [2019-10-14 22:06:53,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:06:53" (3/3) ... [2019-10-14 22:06:53,440 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-reverse.i [2019-10-14 22:06:53,449 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:06:53,458 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-14 22:06:53,470 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-14 22:06:53,494 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:06:53,495 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:06:53,495 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:06:53,495 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:06:53,495 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:06:53,495 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:06:53,495 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:06:53,496 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:06:53,512 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-10-14 22:06:53,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-14 22:06:53,517 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:53,520 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:06:53,522 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:53,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:53,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1398993325, now seen corresponding path program 1 times [2019-10-14 22:06:53,539 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:53,540 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215162464] [2019-10-14 22:06:53,540 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:53,540 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:53,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:53,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:53,714 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215162464] [2019-10-14 22:06:53,715 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:06:53,716 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 22:06:53,716 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970934690] [2019-10-14 22:06:53,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:06:53,721 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:53,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:06:53,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 22:06:53,737 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2019-10-14 22:06:53,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:53,882 INFO L93 Difference]: Finished difference Result 76 states and 118 transitions. [2019-10-14 22:06:53,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:06:53,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-14 22:06:53,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:53,892 INFO L225 Difference]: With dead ends: 76 [2019-10-14 22:06:53,893 INFO L226 Difference]: Without dead ends: 35 [2019-10-14 22:06:53,896 INFO L600 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 [2019-10-14 22:06:53,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-14 22:06:53,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-10-14 22:06:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-14 22:06:53,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2019-10-14 22:06:53,955 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 11 [2019-10-14 22:06:53,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:53,955 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2019-10-14 22:06:53,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:06:53,955 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2019-10-14 22:06:53,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 22:06:53,956 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:53,956 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:06:53,957 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:53,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:53,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1902233848, now seen corresponding path program 1 times [2019-10-14 22:06:53,957 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:53,958 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093341059] [2019-10-14 22:06:53,958 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:53,958 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:53,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:54,121 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093341059] [2019-10-14 22:06:54,122 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:06:54,123 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 22:06:54,123 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463371428] [2019-10-14 22:06:54,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 22:06:54,125 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:54,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 22:06:54,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-14 22:06:54,126 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 6 states. [2019-10-14 22:06:54,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:54,445 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2019-10-14 22:06:54,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:06:54,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-10-14 22:06:54,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:54,447 INFO L225 Difference]: With dead ends: 75 [2019-10-14 22:06:54,447 INFO L226 Difference]: Without dead ends: 49 [2019-10-14 22:06:54,450 INFO L600 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 [2019-10-14 22:06:54,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-10-14 22:06:54,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2019-10-14 22:06:54,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-14 22:06:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2019-10-14 22:06:54,467 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 14 [2019-10-14 22:06:54,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:54,467 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2019-10-14 22:06:54,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 22:06:54,468 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2019-10-14 22:06:54,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 22:06:54,470 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:54,470 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:06:54,470 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:54,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:54,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1902292180, now seen corresponding path program 1 times [2019-10-14 22:06:54,471 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:54,472 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216033230] [2019-10-14 22:06:54,472 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:54,472 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:54,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:54,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:54,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216033230] [2019-10-14 22:06:54,582 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:06:54,582 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 22:06:54,582 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714724188] [2019-10-14 22:06:54,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:06:54,583 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:54,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:06:54,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:06:54,587 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 5 states. [2019-10-14 22:06:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:54,758 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2019-10-14 22:06:54,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 22:06:54,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-14 22:06:54,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:54,760 INFO L225 Difference]: With dead ends: 68 [2019-10-14 22:06:54,760 INFO L226 Difference]: Without dead ends: 54 [2019-10-14 22:06:54,761 INFO L600 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 [2019-10-14 22:06:54,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-14 22:06:54,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2019-10-14 22:06:54,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-14 22:06:54,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2019-10-14 22:06:54,770 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 14 [2019-10-14 22:06:54,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:54,770 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2019-10-14 22:06:54,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:06:54,771 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2019-10-14 22:06:54,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-14 22:06:54,772 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:54,772 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:06:54,772 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:54,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:54,773 INFO L82 PathProgramCache]: Analyzing trace with hash -202034517, now seen corresponding path program 1 times [2019-10-14 22:06:54,773 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:54,773 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414166806] [2019-10-14 22:06:54,773 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:54,773 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:54,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 22:06:54,890 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414166806] [2019-10-14 22:06:54,891 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912099783] [2019-10-14 22:06:54,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:06:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:55,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-14 22:06:55,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:06:55,099 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 22:06:55,148 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2019-10-14 22:06:55,149 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 22:06:55,154 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2019-10-14 22:06:55,155 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 22:06:55,175 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:06:55,179 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2019-10-14 22:06:55,180 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-14 22:06:55,183 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-10-14 22:06:55,184 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-14 22:06:55,189 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:06:55,189 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-14 22:06:55,190 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:47, output treesize:9 [2019-10-14 22:06:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 22:06:55,194 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:06:55,194 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-10-14 22:06:55,195 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451024575] [2019-10-14 22:06:55,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 22:06:55,195 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:55,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 22:06:55,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:06:55,196 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand 7 states. [2019-10-14 22:06:55,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:55,525 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2019-10-14 22:06:55,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 22:06:55,526 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2019-10-14 22:06:55,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:55,530 INFO L225 Difference]: With dead ends: 54 [2019-10-14 22:06:55,530 INFO L226 Difference]: Without dead ends: 50 [2019-10-14 22:06:55,531 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:06:55,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-14 22:06:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2019-10-14 22:06:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-14 22:06:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2019-10-14 22:06:55,545 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 22 [2019-10-14 22:06:55,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:55,545 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2019-10-14 22:06:55,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 22:06:55,546 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2019-10-14 22:06:55,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-14 22:06:55,547 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:55,547 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:06:55,752 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:06:55,753 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:55,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:55,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1078104211, now seen corresponding path program 1 times [2019-10-14 22:06:55,755 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:55,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140249034] [2019-10-14 22:06:55,755 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:55,756 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:55,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:55,964 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140249034] [2019-10-14 22:06:55,964 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301335044] [2019-10-14 22:06:55,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:06:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:56,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 42 conjunts are in the unsatisfiable core [2019-10-14 22:06:56,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:06:56,091 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-10-14 22:06:56,091 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 22:06:56,096 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:06:56,096 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-14 22:06:56,097 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-10-14 22:06:56,169 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:06:56,170 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-10-14 22:06:56,171 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 22:06:56,188 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:06:56,194 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:06:56,245 INFO L341 Elim1Store]: treesize reduction 73, result has 29.1 percent of original size [2019-10-14 22:06:56,246 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 37 [2019-10-14 22:06:56,247 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 22:06:56,269 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:06:56,272 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 22:06:56,275 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-14 22:06:56,278 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:182, output treesize:57 [2019-10-14 22:06:56,278 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 22:06:56,325 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms