/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-circular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 15:08:15,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 15:08:15,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 15:08:15,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 15:08:15,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 15:08:15,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 15:08:15,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 15:08:15,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 15:08:15,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 15:08:15,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 15:08:15,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 15:08:15,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 15:08:15,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 15:08:15,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 15:08:15,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 15:08:15,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 15:08:15,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 15:08:15,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 15:08:15,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 15:08:15,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 15:08:15,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 15:08:15,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 15:08:15,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 15:08:15,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 15:08:15,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-10 15:08:15,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-10 15:08:15,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-10 15:08:15,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-10 15:08:15,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-10 15:08:15,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-10 15:08:15,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-10 15:08:15,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-10 15:08:15,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-10 15:08:15,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-10 15:08:15,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-10 15:08:15,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-10 15:08:15,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-10 15:08:15,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-10 15:08:15,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 15:08:15,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 15:08:15,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 15:08:15,650 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-10 15:08:15,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 15:08:15,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 15:08:15,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-10 15:08:15,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-10 15:08:15,666 INFO L138 SettingsManager]: * Use SBE=true [2020-07-10 15:08:15,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 15:08:15,666 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 15:08:15,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 15:08:15,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 15:08:15,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 15:08:15,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 15:08:15,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 15:08:15,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 15:08:15,668 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 15:08:15,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 15:08:15,668 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 15:08:15,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 15:08:15,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 15:08:15,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-10 15:08:15,669 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 15:08:15,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 15:08:15,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 15:08:15,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 15:08:15,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-10 15:08:15,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-10 15:08:15,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-10 15:08:15,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-10 15:08:15,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 15:08:15,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-10 15:08:15,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-10 15:08:15,999 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 15:08:16,013 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 15:08:16,016 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 15:08:16,017 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 15:08:16,018 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 15:08:16,018 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-07-10 15:08:16,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3ae36cd/2457bf54272647d4840f0b26e218df03/FLAG11c8339cb [2020-07-10 15:08:16,685 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 15:08:16,685 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-07-10 15:08:16,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3ae36cd/2457bf54272647d4840f0b26e218df03/FLAG11c8339cb [2020-07-10 15:08:16,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3ae36cd/2457bf54272647d4840f0b26e218df03 [2020-07-10 15:08:16,994 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 15:08:16,996 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 15:08:16,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 15:08:16,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 15:08:17,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 15:08:17,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:08:16" (1/1) ... [2020-07-10 15:08:17,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3297cb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:08:17, skipping insertion in model container [2020-07-10 15:08:17,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:08:16" (1/1) ... [2020-07-10 15:08:17,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 15:08:17,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 15:08:17,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:08:17,609 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 15:08:17,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:08:17,736 INFO L208 MainTranslator]: Completed translation [2020-07-10 15:08:17,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:08:17 WrapperNode [2020-07-10 15:08:17,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 15:08:17,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 15:08:17,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 15:08:17,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 15:08:17,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:08:17" (1/1) ... [2020-07-10 15:08:17,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:08:17" (1/1) ... [2020-07-10 15:08:17,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:08:17" (1/1) ... [2020-07-10 15:08:17,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:08:17" (1/1) ... [2020-07-10 15:08:17,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:08:17" (1/1) ... [2020-07-10 15:08:17,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:08:17" (1/1) ... [2020-07-10 15:08:17,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:08:17" (1/1) ... [2020-07-10 15:08:17,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 15:08:17,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 15:08:17,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 15:08:17,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 15:08:17,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:08:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 15:08:17,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 15:08:17,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 15:08:17,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 15:08:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-10 15:08:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-10 15:08:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-10 15:08:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-10 15:08:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-10 15:08:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-10 15:08:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-10 15:08:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-10 15:08:17,879 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-10 15:08:17,879 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-10 15:08:17,879 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-10 15:08:17,879 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-10 15:08:17,879 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-10 15:08:17,879 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-10 15:08:17,880 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-10 15:08:17,880 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-10 15:08:17,880 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-10 15:08:17,880 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-10 15:08:17,880 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-10 15:08:17,880 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-10 15:08:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-10 15:08:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-10 15:08:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-10 15:08:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-10 15:08:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-10 15:08:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-10 15:08:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-10 15:08:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-10 15:08:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-10 15:08:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-10 15:08:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-10 15:08:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-10 15:08:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-10 15:08:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-10 15:08:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-10 15:08:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-10 15:08:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-10 15:08:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-10 15:08:17,884 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-10 15:08:17,884 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-10 15:08:17,884 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-10 15:08:17,884 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-10 15:08:17,884 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-10 15:08:17,884 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-10 15:08:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-10 15:08:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-10 15:08:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-10 15:08:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-10 15:08:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-10 15:08:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-10 15:08:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-10 15:08:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-10 15:08:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-10 15:08:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-10 15:08:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-10 15:08:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-10 15:08:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-10 15:08:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-10 15:08:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-10 15:08:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-10 15:08:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-10 15:08:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-10 15:08:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-10 15:08:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-10 15:08:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-10 15:08:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-10 15:08:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-10 15:08:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-10 15:08:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-10 15:08:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-10 15:08:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-10 15:08:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-10 15:08:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-10 15:08:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-10 15:08:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-10 15:08:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-10 15:08:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-10 15:08:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-10 15:08:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-10 15:08:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-10 15:08:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-10 15:08:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-10 15:08:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-10 15:08:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-10 15:08:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-10 15:08:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-10 15:08:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-10 15:08:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-10 15:08:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-10 15:08:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-10 15:08:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-10 15:08:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-10 15:08:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-10 15:08:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-10 15:08:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-10 15:08:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-10 15:08:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-10 15:08:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-10 15:08:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-10 15:08:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-10 15:08:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-10 15:08:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-10 15:08:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-10 15:08:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 15:08:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 15:08:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 15:08:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-10 15:08:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-10 15:08:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-10 15:08:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-10 15:08:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-10 15:08:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-10 15:08:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 15:08:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 15:08:18,586 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 15:08:18,586 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-10 15:08:18,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:08:18 BoogieIcfgContainer [2020-07-10 15:08:18,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 15:08:18,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 15:08:18,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 15:08:18,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 15:08:18,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 03:08:16" (1/3) ... [2020-07-10 15:08:18,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81500b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:08:18, skipping insertion in model container [2020-07-10 15:08:18,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:08:17" (2/3) ... [2020-07-10 15:08:18,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81500b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:08:18, skipping insertion in model container [2020-07-10 15:08:18,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:08:18" (3/3) ... [2020-07-10 15:08:18,600 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2020-07-10 15:08:18,612 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-10 15:08:18,622 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-10 15:08:18,637 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-10 15:08:18,664 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 15:08:18,664 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 15:08:18,664 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-10 15:08:18,664 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 15:08:18,665 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 15:08:18,665 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 15:08:18,665 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 15:08:18,665 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 15:08:18,687 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-10 15:08:18,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-10 15:08:18,695 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:08:18,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:08:18,697 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:08:18,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:08:18,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1483997276, now seen corresponding path program 1 times [2020-07-10 15:08:18,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:08:18,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442094740] [2020-07-10 15:08:18,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:08:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:08:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:08:18,932 INFO L280 TraceCheckUtils]: 0: Hoare triple {46#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {41#true} is VALID [2020-07-10 15:08:18,933 INFO L280 TraceCheckUtils]: 1: Hoare triple {41#true} assume true; {41#true} is VALID [2020-07-10 15:08:18,933 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {41#true} {41#true} #129#return; {41#true} is VALID [2020-07-10 15:08:18,939 INFO L263 TraceCheckUtils]: 0: Hoare triple {41#true} call ULTIMATE.init(); {46#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-10 15:08:18,939 INFO L280 TraceCheckUtils]: 1: Hoare triple {46#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {41#true} is VALID [2020-07-10 15:08:18,940 INFO L280 TraceCheckUtils]: 2: Hoare triple {41#true} assume true; {41#true} is VALID [2020-07-10 15:08:18,940 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {41#true} {41#true} #129#return; {41#true} is VALID [2020-07-10 15:08:18,940 INFO L263 TraceCheckUtils]: 4: Hoare triple {41#true} call #t~ret18 := main(); {41#true} is VALID [2020-07-10 15:08:18,941 INFO L280 TraceCheckUtils]: 5: Hoare triple {41#true} call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset;call write~$Pointer$(~head~0.base, ~head~0.offset, ~head~0.base, ~head~0.offset, 4);call write~int(0, ~head~0.base, 8 + ~head~0.offset, 4);~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset;~state~0 := 1; {41#true} is VALID [2020-07-10 15:08:18,942 INFO L280 TraceCheckUtils]: 6: Hoare triple {41#true} assume !true; {42#false} is VALID [2020-07-10 15:08:18,943 INFO L280 TraceCheckUtils]: 7: Hoare triple {42#false} call write~int(~state~0, ~x~0.base, 8 + ~x~0.offset, 4);call #t~mem6.base, #t~mem6.offset := read~$Pointer$(~head~0.base, ~head~0.offset, 4);~x~0.base, ~x~0.offset := #t~mem6.base, #t~mem6.offset;havoc #t~mem6.base, #t~mem6.offset; {42#false} is VALID [2020-07-10 15:08:18,943 INFO L280 TraceCheckUtils]: 8: Hoare triple {42#false} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {42#false} is VALID [2020-07-10 15:08:18,944 INFO L280 TraceCheckUtils]: 9: Hoare triple {42#false} assume !false; {42#false} is VALID [2020-07-10 15:08:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:08:18,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442094740] [2020-07-10 15:08:18,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:08:18,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-10 15:08:18,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145263599] [2020-07-10 15:08:18,955 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-10 15:08:18,958 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:08:18,962 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-10 15:08:18,989 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:08:18,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-10 15:08:18,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:08:18,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-10 15:08:19,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-10 15:08:19,003 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-07-10 15:08:19,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:08:19,324 INFO L93 Difference]: Finished difference Result 70 states and 106 transitions. [2020-07-10 15:08:19,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-10 15:08:19,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-10 15:08:19,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:08:19,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-10 15:08:19,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2020-07-10 15:08:19,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-10 15:08:19,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2020-07-10 15:08:19,364 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 106 transitions. [2020-07-10 15:08:19,528 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 106 edges. 106 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:08:19,553 INFO L225 Difference]: With dead ends: 70 [2020-07-10 15:08:19,553 INFO L226 Difference]: Without dead ends: 30 [2020-07-10 15:08:19,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-10 15:08:19,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-10 15:08:19,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-10 15:08:19,614 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:08:19,615 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand 30 states. [2020-07-10 15:08:19,616 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand 30 states. [2020-07-10 15:08:19,616 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 30 states. [2020-07-10 15:08:19,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:08:19,620 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-07-10 15:08:19,621 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-07-10 15:08:19,621 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:08:19,621 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:08:19,622 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand 30 states. [2020-07-10 15:08:19,622 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 30 states. [2020-07-10 15:08:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:08:19,626 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-07-10 15:08:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-07-10 15:08:19,627 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:08:19,627 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:08:19,627 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:08:19,627 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:08:19,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-10 15:08:19,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-07-10 15:08:19,632 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 10 [2020-07-10 15:08:19,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:08:19,632 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-07-10 15:08:19,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-10 15:08:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-07-10 15:08:19,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-10 15:08:19,633 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:08:19,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:08:19,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 15:08:19,634 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:08:19,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:08:19,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1199756337, now seen corresponding path program 1 times [2020-07-10 15:08:19,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:08:19,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39870754] [2020-07-10 15:08:19,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:08:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:08:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:08:19,824 INFO L280 TraceCheckUtils]: 0: Hoare triple {238#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {231#true} is VALID [2020-07-10 15:08:19,824 INFO L280 TraceCheckUtils]: 1: Hoare triple {231#true} assume true; {231#true} is VALID [2020-07-10 15:08:19,824 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {231#true} {231#true} #129#return; {231#true} is VALID [2020-07-10 15:08:19,825 INFO L263 TraceCheckUtils]: 0: Hoare triple {231#true} call ULTIMATE.init(); {238#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-10 15:08:19,825 INFO L280 TraceCheckUtils]: 1: Hoare triple {238#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {231#true} is VALID [2020-07-10 15:08:19,826 INFO L280 TraceCheckUtils]: 2: Hoare triple {231#true} assume true; {231#true} is VALID [2020-07-10 15:08:19,826 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {231#true} {231#true} #129#return; {231#true} is VALID [2020-07-10 15:08:19,826 INFO L263 TraceCheckUtils]: 4: Hoare triple {231#true} call #t~ret18 := main(); {231#true} is VALID [2020-07-10 15:08:19,828 INFO L280 TraceCheckUtils]: 5: Hoare triple {231#true} call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset;call write~$Pointer$(~head~0.base, ~head~0.offset, ~head~0.base, ~head~0.offset, 4);call write~int(0, ~head~0.base, 8 + ~head~0.offset, 4);~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset;~state~0 := 1; {236#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} is VALID [2020-07-10 15:08:19,829 INFO L280 TraceCheckUtils]: 6: Hoare triple {236#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {236#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} is VALID [2020-07-10 15:08:19,830 INFO L280 TraceCheckUtils]: 7: Hoare triple {236#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} assume !(0 != #t~nondet1);havoc #t~nondet1; {236#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} is VALID [2020-07-10 15:08:19,832 INFO L280 TraceCheckUtils]: 8: Hoare triple {236#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} call write~int(~state~0, ~x~0.base, 8 + ~x~0.offset, 4);call #t~mem6.base, #t~mem6.offset := read~$Pointer$(~head~0.base, ~head~0.offset, 4);~x~0.base, ~x~0.offset := #t~mem6.base, #t~mem6.offset;havoc #t~mem6.base, #t~mem6.offset; {237#(not (= 0 main_~x~0.base))} is VALID [2020-07-10 15:08:19,833 INFO L280 TraceCheckUtils]: 9: Hoare triple {237#(not (= 0 main_~x~0.base))} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {232#false} is VALID [2020-07-10 15:08:19,833 INFO L280 TraceCheckUtils]: 10: Hoare triple {232#false} assume !false; {232#false} is VALID [2020-07-10 15:08:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:08:19,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39870754] [2020-07-10 15:08:19,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:08:19,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-10 15:08:19,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294853513] [2020-07-10 15:08:19,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-10 15:08:19,838 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:08:19,838 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-10 15:08:19,853 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:08:19,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-10 15:08:19,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:08:19,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-10 15:08:19,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-10 15:08:19,854 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-07-10 15:08:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:08:20,161 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2020-07-10 15:08:20,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-10 15:08:20,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-10 15:08:20,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:08:20,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 15:08:20,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions. [2020-07-10 15:08:20,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 15:08:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions. [2020-07-10 15:08:20,167 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 53 transitions. [2020-07-10 15:08:20,241 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 53 edges. 53 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:08:20,243 INFO L225 Difference]: With dead ends: 46 [2020-07-10 15:08:20,244 INFO L226 Difference]: Without dead ends: 42 [2020-07-10 15:08:20,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-10 15:08:20,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-10 15:08:20,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-07-10 15:08:20,261 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:08:20,261 INFO L82 GeneralOperation]: Start isEquivalent. First operand 42 states. Second operand 32 states. [2020-07-10 15:08:20,261 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 32 states. [2020-07-10 15:08:20,262 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 32 states. [2020-07-10 15:08:20,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:08:20,265 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-07-10 15:08:20,265 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-10 15:08:20,266 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:08:20,266 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:08:20,266 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand 42 states. [2020-07-10 15:08:20,266 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 42 states. [2020-07-10 15:08:20,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:08:20,270 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-07-10 15:08:20,270 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-10 15:08:20,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:08:20,271 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:08:20,271 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:08:20,272 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:08:20,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-10 15:08:20,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-07-10 15:08:20,276 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 11 [2020-07-10 15:08:20,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:08:20,277 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-07-10 15:08:20,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-10 15:08:20,277 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-07-10 15:08:20,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-10 15:08:20,278 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:08:20,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:08:20,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 15:08:20,278 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:08:20,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:08:20,279 INFO L82 PathProgramCache]: Analyzing trace with hash -97127833, now seen corresponding path program 1 times [2020-07-10 15:08:20,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:08:20,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159742653] [2020-07-10 15:08:20,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:08:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:08:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:08:20,375 INFO L280 TraceCheckUtils]: 0: Hoare triple {432#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {426#true} is VALID [2020-07-10 15:08:20,375 INFO L280 TraceCheckUtils]: 1: Hoare triple {426#true} assume true; {426#true} is VALID [2020-07-10 15:08:20,375 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {426#true} {426#true} #129#return; {426#true} is VALID [2020-07-10 15:08:20,377 INFO L263 TraceCheckUtils]: 0: Hoare triple {426#true} call ULTIMATE.init(); {432#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-10 15:08:20,377 INFO L280 TraceCheckUtils]: 1: Hoare triple {432#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {426#true} is VALID [2020-07-10 15:08:20,377 INFO L280 TraceCheckUtils]: 2: Hoare triple {426#true} assume true; {426#true} is VALID [2020-07-10 15:08:20,378 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {426#true} {426#true} #129#return; {426#true} is VALID [2020-07-10 15:08:20,378 INFO L263 TraceCheckUtils]: 4: Hoare triple {426#true} call #t~ret18 := main(); {426#true} is VALID [2020-07-10 15:08:20,379 INFO L280 TraceCheckUtils]: 5: Hoare triple {426#true} call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset;call write~$Pointer$(~head~0.base, ~head~0.offset, ~head~0.base, ~head~0.offset, 4);call write~int(0, ~head~0.base, 8 + ~head~0.offset, 4);~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset;~state~0 := 1; {431#(= 1 main_~state~0)} is VALID [2020-07-10 15:08:20,380 INFO L280 TraceCheckUtils]: 6: Hoare triple {431#(= 1 main_~state~0)} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {431#(= 1 main_~state~0)} is VALID [2020-07-10 15:08:20,381 INFO L280 TraceCheckUtils]: 7: Hoare triple {431#(= 1 main_~state~0)} assume !!(0 != #t~nondet1);havoc #t~nondet1;call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);call write~$Pointer$(#t~malloc2.base, #t~malloc2.offset, ~x~0.base, ~x~0.offset, 4);call #t~mem3.base, #t~mem3.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4);call write~$Pointer$(~x~0.base, ~x~0.offset, #t~mem3.base, 4 + #t~mem3.offset, 4);havoc #t~mem3.base, #t~mem3.offset;call #t~mem4.base, #t~mem4.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4);~x~0.base, ~x~0.offset := #t~mem4.base, #t~mem4.offset;havoc #t~mem4.base, #t~mem4.offset;call write~$Pointer$(~head~0.base, ~head~0.offset, ~x~0.base, ~x~0.offset, 4);assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647; {431#(= 1 main_~state~0)} is VALID [2020-07-10 15:08:20,381 INFO L280 TraceCheckUtils]: 8: Hoare triple {431#(= 1 main_~state~0)} assume 0 != #t~nondet5;havoc #t~nondet5; {431#(= 1 main_~state~0)} is VALID [2020-07-10 15:08:20,382 INFO L280 TraceCheckUtils]: 9: Hoare triple {431#(= 1 main_~state~0)} assume !(1 == ~state~0); {427#false} is VALID [2020-07-10 15:08:20,382 INFO L280 TraceCheckUtils]: 10: Hoare triple {427#false} assume !(2 == ~state~0); {427#false} is VALID [2020-07-10 15:08:20,383 INFO L280 TraceCheckUtils]: 11: Hoare triple {427#false} call write~int(~state~0, ~x~0.base, 8 + ~x~0.offset, 4);call #t~mem6.base, #t~mem6.offset := read~$Pointer$(~head~0.base, ~head~0.offset, 4);~x~0.base, ~x~0.offset := #t~mem6.base, #t~mem6.offset;havoc #t~mem6.base, #t~mem6.offset; {427#false} is VALID [2020-07-10 15:08:20,383 INFO L280 TraceCheckUtils]: 12: Hoare triple {427#false} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {427#false} is VALID [2020-07-10 15:08:20,383 INFO L280 TraceCheckUtils]: 13: Hoare triple {427#false} assume !false; {427#false} is VALID [2020-07-10 15:08:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:08:20,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159742653] [2020-07-10 15:08:20,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:08:20,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-10 15:08:20,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521687819] [2020-07-10 15:08:20,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-10 15:08:20,386 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:08:20,386 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-10 15:08:20,405 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:08:20,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-10 15:08:20,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:08:20,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-10 15:08:20,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-10 15:08:20,406 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 4 states. [2020-07-10 15:08:20,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:08:20,609 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-07-10 15:08:20,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-10 15:08:20,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-10 15:08:20,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:08:20,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-10 15:08:20,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2020-07-10 15:08:20,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-10 15:08:20,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2020-07-10 15:08:20,616 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 85 transitions. [2020-07-10 15:08:20,720 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 85 edges. 85 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:08:20,725 INFO L225 Difference]: With dead ends: 75 [2020-07-10 15:08:20,725 INFO L226 Difference]: Without dead ends: 53 [2020-07-10 15:08:20,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-10 15:08:20,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-10 15:08:20,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2020-07-10 15:08:20,767 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:08:20,768 INFO L82 GeneralOperation]: Start isEquivalent. First operand 53 states. Second operand 39 states. [2020-07-10 15:08:20,768 INFO L74 IsIncluded]: Start isIncluded. First operand 53 states. Second operand 39 states. [2020-07-10 15:08:20,768 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 39 states. [2020-07-10 15:08:20,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:08:20,771 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-07-10 15:08:20,771 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-07-10 15:08:20,772 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:08:20,772 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:08:20,772 INFO L74 IsIncluded]: Start isIncluded. First operand 39 states. Second operand 53 states. [2020-07-10 15:08:20,773 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 53 states. [2020-07-10 15:08:20,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:08:20,776 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-07-10 15:08:20,776 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-07-10 15:08:20,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:08:20,777 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:08:20,777 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:08:20,777 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:08:20,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-10 15:08:20,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-07-10 15:08:20,780 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 14 [2020-07-10 15:08:20,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:08:20,780 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-07-10 15:08:20,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-10 15:08:20,780 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-07-10 15:08:20,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-10 15:08:20,781 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:08:20,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:08:20,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-10 15:08:20,782 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:08:20,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:08:20,783 INFO L82 PathProgramCache]: Analyzing trace with hash 2075944349, now seen corresponding path program 1 times [2020-07-10 15:08:20,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:08:20,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3398187] [2020-07-10 15:08:20,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:08:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 15:08:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 15:08:20,879 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-10 15:08:20,880 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-10 15:08:20,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-10 15:08:20,923 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-10 15:08:20,923 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 15:08:20,923 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 15:08:20,923 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-10 15:08:20,923 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 15:08:20,923 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 15:08:20,924 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 15:08:20,924 WARN L170 areAnnotationChecker]: L1014-5 has no Hoare annotation [2020-07-10 15:08:20,924 WARN L170 areAnnotationChecker]: L1014-5 has no Hoare annotation [2020-07-10 15:08:20,924 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 15:08:20,924 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 15:08:20,924 WARN L170 areAnnotationChecker]: L994-3 has no Hoare annotation [2020-07-10 15:08:20,924 WARN L170 areAnnotationChecker]: L994-1 has no Hoare annotation [2020-07-10 15:08:20,924 WARN L170 areAnnotationChecker]: L994-1 has no Hoare annotation [2020-07-10 15:08:20,924 WARN L170 areAnnotationChecker]: L1019-4 has no Hoare annotation [2020-07-10 15:08:20,924 WARN L170 areAnnotationChecker]: L1019-4 has no Hoare annotation [2020-07-10 15:08:20,924 WARN L170 areAnnotationChecker]: L1019-4 has no Hoare annotation [2020-07-10 15:08:20,924 WARN L170 areAnnotationChecker]: L1002 has no Hoare annotation [2020-07-10 15:08:20,924 WARN L170 areAnnotationChecker]: L1002 has no Hoare annotation [2020-07-10 15:08:20,925 WARN L170 areAnnotationChecker]: L1021-2 has no Hoare annotation [2020-07-10 15:08:20,925 WARN L170 areAnnotationChecker]: L1021-2 has no Hoare annotation [2020-07-10 15:08:20,925 WARN L170 areAnnotationChecker]: L1019-1 has no Hoare annotation [2020-07-10 15:08:20,925 WARN L170 areAnnotationChecker]: L1019-1 has no Hoare annotation [2020-07-10 15:08:20,925 WARN L170 areAnnotationChecker]: L1019-3 has no Hoare annotation [2020-07-10 15:08:20,925 WARN L170 areAnnotationChecker]: L1019-3 has no Hoare annotation [2020-07-10 15:08:20,925 WARN L170 areAnnotationChecker]: L1004 has no Hoare annotation [2020-07-10 15:08:20,925 WARN L170 areAnnotationChecker]: L1004 has no Hoare annotation [2020-07-10 15:08:20,925 WARN L170 areAnnotationChecker]: L1002-1 has no Hoare annotation [2020-07-10 15:08:20,925 WARN L170 areAnnotationChecker]: L1021-3 has no Hoare annotation [2020-07-10 15:08:20,925 WARN L170 areAnnotationChecker]: L1021 has no Hoare annotation [2020-07-10 15:08:20,926 WARN L170 areAnnotationChecker]: L1021 has no Hoare annotation [2020-07-10 15:08:20,926 WARN L170 areAnnotationChecker]: L1006 has no Hoare annotation [2020-07-10 15:08:20,926 WARN L170 areAnnotationChecker]: L1006 has no Hoare annotation [2020-07-10 15:08:20,926 WARN L170 areAnnotationChecker]: L1014-4 has no Hoare annotation [2020-07-10 15:08:20,926 WARN L170 areAnnotationChecker]: L1014-4 has no Hoare annotation [2020-07-10 15:08:20,926 WARN L170 areAnnotationChecker]: L1014-4 has no Hoare annotation [2020-07-10 15:08:20,926 WARN L170 areAnnotationChecker]: L1029-3 has no Hoare annotation [2020-07-10 15:08:20,926 WARN L170 areAnnotationChecker]: L1029-3 has no Hoare annotation [2020-07-10 15:08:20,927 WARN L170 areAnnotationChecker]: L1023-7 has no Hoare annotation [2020-07-10 15:08:20,927 WARN L170 areAnnotationChecker]: L1023-7 has no Hoare annotation [2020-07-10 15:08:20,927 WARN L170 areAnnotationChecker]: L1014-1 has no Hoare annotation [2020-07-10 15:08:20,927 WARN L170 areAnnotationChecker]: L1014-1 has no Hoare annotation [2020-07-10 15:08:20,927 WARN L170 areAnnotationChecker]: L1014-3 has no Hoare annotation [2020-07-10 15:08:20,927 WARN L170 areAnnotationChecker]: L1014-3 has no Hoare annotation [2020-07-10 15:08:20,927 WARN L170 areAnnotationChecker]: L1029-4 has no Hoare annotation [2020-07-10 15:08:20,927 WARN L170 areAnnotationChecker]: L1029-1 has no Hoare annotation [2020-07-10 15:08:20,928 WARN L170 areAnnotationChecker]: L1029-1 has no Hoare annotation [2020-07-10 15:08:20,928 WARN L170 areAnnotationChecker]: L1023-1 has no Hoare annotation [2020-07-10 15:08:20,928 WARN L170 areAnnotationChecker]: L1023-1 has no Hoare annotation [2020-07-10 15:08:20,928 WARN L170 areAnnotationChecker]: L1023-8 has no Hoare annotation [2020-07-10 15:08:20,928 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 15:08:20,928 WARN L170 areAnnotationChecker]: L1023-3 has no Hoare annotation [2020-07-10 15:08:20,928 WARN L170 areAnnotationChecker]: L1023-3 has no Hoare annotation [2020-07-10 15:08:20,928 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 15:08:20,929 WARN L170 areAnnotationChecker]: L1023-4 has no Hoare annotation [2020-07-10 15:08:20,929 WARN L170 areAnnotationChecker]: L1023-4 has no Hoare annotation [2020-07-10 15:08:20,929 WARN L170 areAnnotationChecker]: L1023-6 has no Hoare annotation [2020-07-10 15:08:20,929 WARN L170 areAnnotationChecker]: L1023-6 has no Hoare annotation [2020-07-10 15:08:20,929 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-10 15:08:20,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 03:08:20 BoogieIcfgContainer [2020-07-10 15:08:20,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 15:08:20,936 INFO L168 Benchmark]: Toolchain (without parser) took 3938.70 ms. Allocated memory was 142.1 MB in the beginning and 254.3 MB in the end (delta: 112.2 MB). Free memory was 97.2 MB in the beginning and 150.1 MB in the end (delta: -52.9 MB). Peak memory consumption was 59.3 MB. Max. memory is 7.1 GB. [2020-07-10 15:08:20,936 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 117.1 MB in the beginning and 116.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-10 15:08:20,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.73 ms. Allocated memory was 142.1 MB in the beginning and 198.7 MB in the end (delta: 56.6 MB). Free memory was 97.0 MB in the beginning and 164.6 MB in the end (delta: -67.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-07-10 15:08:20,938 INFO L168 Benchmark]: Boogie Preprocessor took 75.28 ms. Allocated memory is still 198.7 MB. Free memory was 164.6 MB in the beginning and 161.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-07-10 15:08:20,939 INFO L168 Benchmark]: RCFGBuilder took 777.59 ms. Allocated memory is still 198.7 MB. Free memory was 161.1 MB in the beginning and 104.2 MB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. [2020-07-10 15:08:20,940 INFO L168 Benchmark]: TraceAbstraction took 2339.91 ms. Allocated memory was 198.7 MB in the beginning and 254.3 MB in the end (delta: 55.6 MB). Free memory was 104.2 MB in the beginning and 150.1 MB in the end (delta: -45.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-10 15:08:20,944 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 117.1 MB in the beginning and 116.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 739.73 ms. Allocated memory was 142.1 MB in the beginning and 198.7 MB in the end (delta: 56.6 MB). Free memory was 97.0 MB in the beginning and 164.6 MB in the end (delta: -67.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.28 ms. Allocated memory is still 198.7 MB. Free memory was 164.6 MB in the beginning and 161.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 777.59 ms. Allocated memory is still 198.7 MB. Free memory was 161.1 MB in the beginning and 104.2 MB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2339.91 ms. Allocated memory was 198.7 MB in the beginning and 254.3 MB in the end (delta: 55.6 MB). Free memory was 104.2 MB in the beginning and 150.1 MB in the end (delta: -45.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1023]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = head [L988] head->data = 0 [L990] SLL* x = head; [L991] int state = 1; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L994] COND FALSE !(__VERIFIER_nondet_int()) [L1016] x->data = state [L1018] EXPR head->next [L1018] x = head->next [L1019] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1021] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1] [L1021] COND TRUE x->data != 0 [L1023] EXPR x->next [L1023] EXPR x->next->data [L1023] EXPR x->next->data != 0 && x->data > x->next->data [L1023] EXPR x->data [L1023] EXPR x->next [L1023] EXPR x->next->data [L1023] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=0] [L1023] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1023] __VERIFIER_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 44 SDslu, 66 SDs, 0 SdLazy, 140 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...