/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:20:58,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:20:58,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:20:58,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 05:20:58,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 05:20:58,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 05:20:58,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 05:20:58,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 05:20:58,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 05:20:58,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 05:20:58,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 05:20:58,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 05:20:58,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:20:58,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:20:58,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:20:58,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:20:58,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:20:58,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:20:58,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:20:58,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:20:58,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:20:58,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:20:58,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:20:58,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:20:58,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 05:20:58,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 05:20:58,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 05:20:58,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 05:20:58,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 05:20:58,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 05:20:58,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 05:20:58,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 05:20:59,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 05:20:59,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 05:20:59,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 05:20:59,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 05:20:59,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 05:20:59,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 05:20:59,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:20:59,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:20:59,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:20:59,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:20:59,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:20:59,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:20:59,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:20:59,039 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:20:59,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:20:59,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:20:59,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:20:59,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:20:59,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:20:59,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:20:59,042 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:20:59,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:20:59,042 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:20:59,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:20:59,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:20:59,043 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:20:59,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:20:59,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:20:59,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:20:59,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:20:59,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:20:59,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:20:59,045 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:20:59,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:20:59,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:20:59,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:20:59,588 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:20:59,588 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:20:59,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-11-07 05:20:59,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc6e82341/de7e287edbff4c6eacd4d754b842f5db/FLAG0373c802c [2020-11-07 05:21:00,511 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:21:00,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-11-07 05:21:00,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc6e82341/de7e287edbff4c6eacd4d754b842f5db/FLAG0373c802c [2020-11-07 05:21:00,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc6e82341/de7e287edbff4c6eacd4d754b842f5db [2020-11-07 05:21:00,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:21:00,733 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:21:00,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:21:00,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:21:00,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:21:00,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:21:00" (1/1) ... [2020-11-07 05:21:00,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c6032d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:00, skipping insertion in model container [2020-11-07 05:21:00,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:21:00" (1/1) ... [2020-11-07 05:21:00,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:21:00,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:21:01,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:21:01,190 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:21:01,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:21:01,350 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:21:01,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:01 WrapperNode [2020-11-07 05:21:01,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:21:01,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:21:01,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:21:01,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:21:01,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:01" (1/1) ... [2020-11-07 05:21:01,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:01" (1/1) ... [2020-11-07 05:21:01,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:01" (1/1) ... [2020-11-07 05:21:01,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:01" (1/1) ... [2020-11-07 05:21:01,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:01" (1/1) ... [2020-11-07 05:21:01,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:01" (1/1) ... [2020-11-07 05:21:01,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:01" (1/1) ... [2020-11-07 05:21:01,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:21:01,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:21:01,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:21:01,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:21:01,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:01" (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 [2020-11-07 05:21:01,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:21:01,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:21:01,579 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:21:01,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:21:01,579 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-07 05:21:01,579 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-07 05:21:01,579 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-07 05:21:01,579 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-07 05:21:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-07 05:21:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-07 05:21:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-07 05:21:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-07 05:21:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-07 05:21:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-07 05:21:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-07 05:21:01,581 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-07 05:21:01,581 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-07 05:21:01,581 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-07 05:21:01,582 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-07 05:21:01,583 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-07 05:21:01,583 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-07 05:21:01,583 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-07 05:21:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-07 05:21:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-07 05:21:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-07 05:21:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-07 05:21:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-07 05:21:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-07 05:21:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-07 05:21:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-07 05:21:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-07 05:21:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-07 05:21:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-07 05:21:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-07 05:21:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-07 05:21:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-07 05:21:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-07 05:21:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-07 05:21:01,590 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-07 05:21:01,590 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-07 05:21:01,590 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-07 05:21:01,590 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-07 05:21:01,591 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-07 05:21:01,591 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-07 05:21:01,591 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-07 05:21:01,591 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-07 05:21:01,591 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-07 05:21:01,591 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-07 05:21:01,591 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-07 05:21:01,592 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-07 05:21:01,592 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-07 05:21:01,592 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-07 05:21:01,592 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-07 05:21:01,592 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-07 05:21:01,592 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 05:21:01,592 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-07 05:21:01,593 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-07 05:21:01,593 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 05:21:01,593 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-07 05:21:01,593 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-07 05:21:01,593 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-07 05:21:01,593 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-07 05:21:01,594 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-07 05:21:01,595 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:21:01,595 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-07 05:21:01,595 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-07 05:21:01,595 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-07 05:21:01,595 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 05:21:01,595 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-07 05:21:01,595 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-07 05:21:01,596 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-07 05:21:01,596 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-07 05:21:01,596 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-07 05:21:01,596 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-07 05:21:01,597 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-07 05:21:01,597 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-07 05:21:01,597 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-07 05:21:01,597 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-07 05:21:01,597 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-07 05:21:01,597 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-07 05:21:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-07 05:21:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-07 05:21:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-07 05:21:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-07 05:21:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-07 05:21:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-07 05:21:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-07 05:21:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-07 05:21:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-07 05:21:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-07 05:21:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-07 05:21:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-07 05:21:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-07 05:21:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-07 05:21:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-07 05:21:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-07 05:21:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-07 05:21:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-07 05:21:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-07 05:21:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-07 05:21:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-07 05:21:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-07 05:21:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-07 05:21:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-07 05:21:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-07 05:21:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-07 05:21:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-07 05:21:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:21:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:21:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 05:21:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 05:21:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:21:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:21:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:21:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 05:21:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 05:21:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:21:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 05:21:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:21:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:21:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:21:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:21:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:21:02,375 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:21:02,376 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-07 05:21:02,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:21:02 BoogieIcfgContainer [2020-11-07 05:21:02,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:21:02,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:21:02,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:21:02,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:21:02,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:21:00" (1/3) ... [2020-11-07 05:21:02,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5548b565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:21:02, skipping insertion in model container [2020-11-07 05:21:02,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:01" (2/3) ... [2020-11-07 05:21:02,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5548b565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:21:02, skipping insertion in model container [2020-11-07 05:21:02,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:21:02" (3/3) ... [2020-11-07 05:21:02,394 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2020-11-07 05:21:02,411 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:21:02,416 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:21:02,432 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:21:02,473 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:21:02,473 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:21:02,474 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:21:02,475 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:21:02,475 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:21:02,478 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:21:02,478 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:21:02,480 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:21:02,507 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-11-07 05:21:02,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-07 05:21:02,524 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:21:02,534 INFO L422 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, 1, 1] [2020-11-07 05:21:02,534 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:21:02,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:21:02,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1251730029, now seen corresponding path program 1 times [2020-11-07 05:21:02,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:21:02,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670934314] [2020-11-07 05:21:02,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:21:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:02,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:21:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:02,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:21:02,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670934314] [2020-11-07 05:21:02,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:21:02,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 05:21:02,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748136164] [2020-11-07 05:21:02,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 05:21:02,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:21:02,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 05:21:02,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 05:21:02,931 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 3 states. [2020-11-07 05:21:03,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:21:03,272 INFO L93 Difference]: Finished difference Result 183 states and 226 transitions. [2020-11-07 05:21:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 05:21:03,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-07 05:21:03,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:21:03,286 INFO L225 Difference]: With dead ends: 183 [2020-11-07 05:21:03,287 INFO L226 Difference]: Without dead ends: 78 [2020-11-07 05:21:03,292 INFO L677 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 [2020-11-07 05:21:03,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-07 05:21:03,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-11-07 05:21:03,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-07 05:21:03,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-11-07 05:21:03,348 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 26 [2020-11-07 05:21:03,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:21:03,348 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-11-07 05:21:03,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 05:21:03,349 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-11-07 05:21:03,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-07 05:21:03,350 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:21:03,350 INFO L422 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, 1, 1, 1, 1] [2020-11-07 05:21:03,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:21:03,351 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:21:03,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:21:03,352 INFO L82 PathProgramCache]: Analyzing trace with hash -548922730, now seen corresponding path program 1 times [2020-11-07 05:21:03,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:21:03,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102513765] [2020-11-07 05:21:03,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:21:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:03,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:21:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:21:03,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102513765] [2020-11-07 05:21:03,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:21:03,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 05:21:03,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911371967] [2020-11-07 05:21:03,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:21:03,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:21:03,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:21:03,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:21:03,685 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 10 states. [2020-11-07 05:21:04,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:21:04,277 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2020-11-07 05:21:04,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 05:21:04,278 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-11-07 05:21:04,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:21:04,281 INFO L225 Difference]: With dead ends: 153 [2020-11-07 05:21:04,281 INFO L226 Difference]: Without dead ends: 149 [2020-11-07 05:21:04,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:21:04,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-11-07 05:21:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 86. [2020-11-07 05:21:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-07 05:21:04,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-11-07 05:21:04,307 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 28 [2020-11-07 05:21:04,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:21:04,307 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-11-07 05:21:04,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:21:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-11-07 05:21:04,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-07 05:21:04,309 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:21:04,309 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:21:04,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:21:04,310 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:21:04,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:21:04,310 INFO L82 PathProgramCache]: Analyzing trace with hash -2123355709, now seen corresponding path program 1 times [2020-11-07 05:21:04,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:21:04,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266842137] [2020-11-07 05:21:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:21:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:04,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:21:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:21:04,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266842137] [2020-11-07 05:21:04,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:21:04,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 05:21:04,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808944750] [2020-11-07 05:21:04,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:21:04,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:21:04,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:21:04,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:21:04,431 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 7 states. [2020-11-07 05:21:04,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:21:04,794 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2020-11-07 05:21:04,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 05:21:04,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-11-07 05:21:04,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:21:04,797 INFO L225 Difference]: With dead ends: 124 [2020-11-07 05:21:04,797 INFO L226 Difference]: Without dead ends: 120 [2020-11-07 05:21:04,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-07 05:21:04,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-11-07 05:21:04,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 85. [2020-11-07 05:21:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-07 05:21:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2020-11-07 05:21:04,817 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 34 [2020-11-07 05:21:04,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:21:04,818 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2020-11-07 05:21:04,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:21:04,818 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2020-11-07 05:21:04,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 05:21:04,820 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:21:04,820 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:21:04,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:21:04,820 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:21:04,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:21:04,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1498433490, now seen corresponding path program 1 times [2020-11-07 05:21:04,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:21:04,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58122717] [2020-11-07 05:21:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:21:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:04,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:21:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:21:04,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58122717] [2020-11-07 05:21:04,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:21:04,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:21:04,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814490815] [2020-11-07 05:21:04,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:21:04,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:21:04,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:21:04,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:21:04,904 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand 4 states. [2020-11-07 05:21:05,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:21:05,089 INFO L93 Difference]: Finished difference Result 199 states and 218 transitions. [2020-11-07 05:21:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:21:05,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-11-07 05:21:05,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:21:05,091 INFO L225 Difference]: With dead ends: 199 [2020-11-07 05:21:05,092 INFO L226 Difference]: Without dead ends: 139 [2020-11-07 05:21:05,093 INFO L677 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 [2020-11-07 05:21:05,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-07 05:21:05,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 102. [2020-11-07 05:21:05,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-11-07 05:21:05,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-11-07 05:21:05,116 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 39 [2020-11-07 05:21:05,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:21:05,117 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-11-07 05:21:05,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:21:05,117 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-11-07 05:21:05,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 05:21:05,118 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:21:05,119 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:21:05,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:21:05,119 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:21:05,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:21:05,120 INFO L82 PathProgramCache]: Analyzing trace with hash -491950303, now seen corresponding path program 1 times [2020-11-07 05:21:05,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:21:05,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977115775] [2020-11-07 05:21:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:21:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:05,172 ERROR L253 erpolLogProxyWrapper]: Interpolant 13 not inductive [2020-11-07 05:21:05,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 05:21:05,186 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:343) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-07 05:21:05,198 INFO L168 Benchmark]: Toolchain (without parser) took 4466.43 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.3 MB in the beginning and 106.1 MB in the end (delta: 20.2 MB). Peak memory consumption was 51.3 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:05,199 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:21:05,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.68 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 104.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:05,201 INFO L168 Benchmark]: Boogie Preprocessor took 133.98 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 101.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:05,203 INFO L168 Benchmark]: RCFGBuilder took 890.91 ms. Allocated memory is still 151.0 MB. Free memory was 101.2 MB in the beginning and 87.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:05,205 INFO L168 Benchmark]: TraceAbstraction took 2808.89 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 87.9 MB in the beginning and 106.1 MB in the end (delta: -18.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:05,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 616.68 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 104.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 133.98 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 101.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 890.91 ms. Allocated memory is still 151.0 MB. Free memory was 101.2 MB in the beginning and 87.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2808.89 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 87.9 MB in the beginning and 106.1 MB in the end (delta: -18.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...