/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 -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-b8ad66e [2020-10-23 20:38:59,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:38:59,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:38:59,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:38:59,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:38:59,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:38:59,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:39:00,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:39:00,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:39:00,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:39:00,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:39:00,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:39:00,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:39:00,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:39:00,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:39:00,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:39:00,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:39:00,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:39:00,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:39:00,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:39:00,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:39:00,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:39:00,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:39:00,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:39:00,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:39:00,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:39:00,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:39:00,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:39:00,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:39:00,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:39:00,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:39:00,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:39:00,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:39:00,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:39:00,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:39:00,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:39:00,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:39:00,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:39:00,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:39:00,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:39:00,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:39:00,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:39:00,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:39:00,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:39:00,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:39:00,086 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:39:00,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:39:00,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:39:00,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:39:00,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:39:00,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:39:00,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:39:00,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:39:00,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:39:00,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:39:00,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:39:00,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:39:00,089 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:39:00,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:39:00,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:39:00,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:39:00,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:39:00,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:39:00,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:39:00,091 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:39:00,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:39:00,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:39:00,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:39:00,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:39:00,550 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:39:00,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-10-23 20:39:00,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0a76ccf2/48a41c30a39247a799bf7a1ef055cf52/FLAGcde226e5c [2020-10-23 20:39:01,360 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:39:01,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-10-23 20:39:01,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0a76ccf2/48a41c30a39247a799bf7a1ef055cf52/FLAGcde226e5c [2020-10-23 20:39:01,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0a76ccf2/48a41c30a39247a799bf7a1ef055cf52 [2020-10-23 20:39:01,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:39:01,675 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:39:01,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:39:01,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:39:01,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:39:01,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:39:01" (1/1) ... [2020-10-23 20:39:01,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2816a4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:01, skipping insertion in model container [2020-10-23 20:39:01,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:39:01" (1/1) ... [2020-10-23 20:39:01,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:39:01,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:39:02,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:39:02,153 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:39:02,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:39:02,283 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:39:02,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:02 WrapperNode [2020-10-23 20:39:02,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:39:02,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:39:02,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:39:02,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:39:02,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:02" (1/1) ... [2020-10-23 20:39:02,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:02" (1/1) ... [2020-10-23 20:39:02,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:02" (1/1) ... [2020-10-23 20:39:02,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:02" (1/1) ... [2020-10-23 20:39:02,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:02" (1/1) ... [2020-10-23 20:39:02,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:02" (1/1) ... [2020-10-23 20:39:02,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:02" (1/1) ... [2020-10-23 20:39:02,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:39:02,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:39:02,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:39:02,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:39:02,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:02" (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 [2020-10-23 20:39:02,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:39:02,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:39:02,460 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:39:02,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:39:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-23 20:39:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-23 20:39:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-23 20:39:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-23 20:39:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-23 20:39:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-23 20:39:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-23 20:39:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-23 20:39:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-23 20:39:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-23 20:39:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-23 20:39:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-23 20:39:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-23 20:39:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-23 20:39:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-23 20:39:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-23 20:39:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-23 20:39:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-23 20:39:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-23 20:39:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-23 20:39:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-23 20:39:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-23 20:39:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-23 20:39:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-23 20:39:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-23 20:39:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-23 20:39:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-23 20:39:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-23 20:39:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-23 20:39:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-23 20:39:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-23 20:39:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-23 20:39:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-23 20:39:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-23 20:39:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-23 20:39:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-23 20:39:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-23 20:39:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-23 20:39:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-23 20:39:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-23 20:39:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-23 20:39:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-23 20:39:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-23 20:39:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-23 20:39:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-23 20:39:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-23 20:39:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-23 20:39:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-23 20:39:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-23 20:39:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-23 20:39:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:39:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-23 20:39:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-23 20:39:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:39:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-23 20:39:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-23 20:39:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-23 20:39:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-23 20:39:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-23 20:39:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:39:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-23 20:39:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-23 20:39:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-23 20:39:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-23 20:39:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-23 20:39:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-23 20:39:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-23 20:39:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-23 20:39:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-23 20:39:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-23 20:39:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-23 20:39:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-23 20:39:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-23 20:39:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-23 20:39:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-23 20:39:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-23 20:39:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-23 20:39:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-23 20:39:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-23 20:39:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-23 20:39:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-23 20:39:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-23 20:39:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-23 20:39:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-23 20:39:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-23 20:39:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-23 20:39:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-23 20:39:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-23 20:39:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-23 20:39:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-23 20:39:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-23 20:39:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-23 20:39:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-23 20:39:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-23 20:39:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-23 20:39:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-23 20:39:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-23 20:39:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-23 20:39:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-23 20:39:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-23 20:39:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-23 20:39:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-23 20:39:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-23 20:39:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:39:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:39:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 20:39:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 20:39:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:39:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:39:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:39:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:39:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:39:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:39:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:39:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:39:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:39:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:39:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:39:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:39:03,047 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:39:03,048 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-23 20:39:03,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:39:03 BoogieIcfgContainer [2020-10-23 20:39:03,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:39:03,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:39:03,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:39:03,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:39:03,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:39:01" (1/3) ... [2020-10-23 20:39:03,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e51bf04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:39:03, skipping insertion in model container [2020-10-23 20:39:03,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:02" (2/3) ... [2020-10-23 20:39:03,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e51bf04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:39:03, skipping insertion in model container [2020-10-23 20:39:03,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:39:03" (3/3) ... [2020-10-23 20:39:03,063 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2020-10-23 20:39:03,078 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:39:03,085 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:39:03,101 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:39:03,131 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:39:03,131 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:39:03,132 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:39:03,132 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:39:03,132 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:39:03,132 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:39:03,132 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:39:03,132 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:39:03,154 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-10-23 20:39:03,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-23 20:39:03,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:39:03,168 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] [2020-10-23 20:39:03,168 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:39:03,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:39:03,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1251730029, now seen corresponding path program 1 times [2020-10-23 20:39:03,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:39:03,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430474885] [2020-10-23 20:39:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:03,302 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:39:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:03,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:39:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:39:03,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430474885] [2020-10-23 20:39:03,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:39:03,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:39:03,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369794208] [2020-10-23 20:39:03,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:39:03,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:39:03,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:39:03,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:39:03,715 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 3 states. [2020-10-23 20:39:04,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:39:04,037 INFO L93 Difference]: Finished difference Result 183 states and 226 transitions. [2020-10-23 20:39:04,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:39:04,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-23 20:39:04,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:39:04,050 INFO L225 Difference]: With dead ends: 183 [2020-10-23 20:39:04,050 INFO L226 Difference]: Without dead ends: 78 [2020-10-23 20:39:04,055 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 [2020-10-23 20:39:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-23 20:39:04,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-23 20:39:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-23 20:39:04,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-10-23 20:39:04,108 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 26 [2020-10-23 20:39:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:39:04,109 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-10-23 20:39:04,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:39:04,109 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-10-23 20:39:04,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 20:39:04,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:39:04,110 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] [2020-10-23 20:39:04,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:39:04,111 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:39:04,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:39:04,112 INFO L82 PathProgramCache]: Analyzing trace with hash -548922730, now seen corresponding path program 1 times [2020-10-23 20:39:04,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:39:04,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995014108] [2020-10-23 20:39:04,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:04,118 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:39:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:04,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:39:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:39:04,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995014108] [2020-10-23 20:39:04,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:39:04,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:39:04,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004164504] [2020-10-23 20:39:04,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:39:04,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:39:04,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:39:04,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:39:04,386 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 10 states. [2020-10-23 20:39:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:39:05,019 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2020-10-23 20:39:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 20:39:05,019 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-23 20:39:05,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:39:05,023 INFO L225 Difference]: With dead ends: 153 [2020-10-23 20:39:05,024 INFO L226 Difference]: Without dead ends: 149 [2020-10-23 20:39:05,026 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 [2020-10-23 20:39:05,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-23 20:39:05,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 86. [2020-10-23 20:39:05,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-23 20:39:05,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-10-23 20:39:05,058 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 28 [2020-10-23 20:39:05,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:39:05,059 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-10-23 20:39:05,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:39:05,059 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-10-23 20:39:05,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-23 20:39:05,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:39:05,061 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] [2020-10-23 20:39:05,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:39:05,061 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:39:05,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:39:05,062 INFO L82 PathProgramCache]: Analyzing trace with hash -2123355709, now seen corresponding path program 1 times [2020-10-23 20:39:05,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:39:05,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315042672] [2020-10-23 20:39:05,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:05,070 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:39:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:05,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:39:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:39:05,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315042672] [2020-10-23 20:39:05,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:39:05,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:39:05,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618454512] [2020-10-23 20:39:05,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:39:05,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:39:05,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:39:05,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:39:05,222 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 7 states. [2020-10-23 20:39:05,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:39:05,634 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2020-10-23 20:39:05,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 20:39:05,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-10-23 20:39:05,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:39:05,637 INFO L225 Difference]: With dead ends: 124 [2020-10-23 20:39:05,637 INFO L226 Difference]: Without dead ends: 120 [2020-10-23 20:39:05,638 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 [2020-10-23 20:39:05,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-23 20:39:05,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 85. [2020-10-23 20:39:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-23 20:39:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2020-10-23 20:39:05,660 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 34 [2020-10-23 20:39:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:39:05,661 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2020-10-23 20:39:05,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:39:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2020-10-23 20:39:05,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-23 20:39:05,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:39:05,663 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] [2020-10-23 20:39:05,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:39:05,663 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:39:05,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:39:05,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1498433490, now seen corresponding path program 1 times [2020-10-23 20:39:05,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:39:05,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455087394] [2020-10-23 20:39:05,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:05,673 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:39:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:05,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:39:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:39:05,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455087394] [2020-10-23 20:39:05,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:39:05,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:39:05,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300934391] [2020-10-23 20:39:05,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:39:05,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:39:05,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:39:05,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:39:05,777 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand 4 states. [2020-10-23 20:39:05,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:39:05,995 INFO L93 Difference]: Finished difference Result 199 states and 218 transitions. [2020-10-23 20:39:05,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:39:05,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-23 20:39:05,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:39:05,998 INFO L225 Difference]: With dead ends: 199 [2020-10-23 20:39:05,998 INFO L226 Difference]: Without dead ends: 139 [2020-10-23 20:39:06,002 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 [2020-10-23 20:39:06,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-23 20:39:06,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 102. [2020-10-23 20:39:06,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-23 20:39:06,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-10-23 20:39:06,042 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 39 [2020-10-23 20:39:06,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:39:06,043 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-10-23 20:39:06,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:39:06,043 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-10-23 20:39:06,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 20:39:06,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:39:06,055 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] [2020-10-23 20:39:06,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:39:06,056 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:39:06,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:39:06,056 INFO L82 PathProgramCache]: Analyzing trace with hash -491950303, now seen corresponding path program 1 times [2020-10-23 20:39:06,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:39:06,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178049183] [2020-10-23 20:39:06,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:06,491 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-10-23 20:39:06,580 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:06,680 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:06,687 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:06,812 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-23 20:39:06,813 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:06,817 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:06,818 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:168, output treesize:157 [2020-10-23 20:39:06,925 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-23 20:39:07,370 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 106 [2020-10-23 20:39:07,398 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:07,491 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:07,503 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:07,596 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:07,597 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:07,598 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:168, output treesize:157 [2020-10-23 20:39:07,714 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:39:07,719 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:39:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:07,822 ERROR L253 erpolLogProxyWrapper]: Interpolant 13 not inductive [2020-10-23 20:39:07,852 ERROR L275 FreeRefinementEngine]: Caught unknown exception: generated interpolants did not pass sanity check [2020-10-23 20:39:07,852 WARN L340 FreeRefinementEngine]: Global settings require throwing the following exception [2020-10-23 20:39:07,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:39:07,853 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.lib.acceleratedinterpolation.Interpolator.generateInterpolantsCraigNested(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolants(Interpolator.java:108) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:322) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) 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:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 20:39:07,859 INFO L168 Benchmark]: Toolchain (without parser) took 6189.47 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 127.5 MB in the beginning and 134.5 MB in the end (delta: -7.0 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:07,860 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 152.0 MB. Free memory was 125.3 MB in the beginning and 125.3 MB in the end (delta: 16.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:39:07,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.46 ms. Allocated memory is still 152.0 MB. Free memory was 127.0 MB in the beginning and 105.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:07,862 INFO L168 Benchmark]: Boogie Preprocessor took 89.27 ms. Allocated memory is still 152.0 MB. Free memory was 105.1 MB in the beginning and 133.1 MB in the end (delta: -28.0 MB). Peak memory consumption was 4.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:07,862 INFO L168 Benchmark]: RCFGBuilder took 674.29 ms. Allocated memory is still 152.0 MB. Free memory was 133.1 MB in the beginning and 86.5 MB in the end (delta: 46.7 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:07,864 INFO L168 Benchmark]: TraceAbstraction took 4804.32 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 85.9 MB in the beginning and 134.5 MB in the end (delta: -48.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:07,868 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 152.0 MB. Free memory was 125.3 MB in the beginning and 125.3 MB in the end (delta: 16.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 604.46 ms. Allocated memory is still 152.0 MB. Free memory was 127.0 MB in the beginning and 105.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 89.27 ms. Allocated memory is still 152.0 MB. Free memory was 105.1 MB in the beginning and 133.1 MB in the end (delta: -28.0 MB). Peak memory consumption was 4.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 674.29 ms. Allocated memory is still 152.0 MB. Free memory was 133.1 MB in the beginning and 86.5 MB in the end (delta: 46.7 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4804.32 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 85.9 MB in the beginning and 134.5 MB in the end (delta: -48.6 MB). Peak memory consumption was 18.5 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...