/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/dll-circular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:09:22,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:09:22,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:09:22,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:09:22,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:09:22,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:09:22,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:09:22,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:09:22,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:09:22,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:09:22,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:09:22,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:09:22,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:09:22,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:09:22,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:09:22,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:09:22,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:09:22,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:09:22,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:09:22,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:09:22,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:09:22,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:09:22,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:09:22,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:09:22,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:09:22,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:09:22,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:09:22,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:09:22,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:09:22,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:09:22,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:09:22,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:09:22,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:09:22,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:09:22,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:09:22,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:09:22,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:09:22,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:09:22,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:09:22,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:09:22,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:09:22,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:09:22,288 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:09:22,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:09:22,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:09:22,290 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:09:22,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:09:22,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:09:22,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:09:22,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:09:22,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:09:22,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:09:22,292 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:09:22,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:09:22,292 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:09:22,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:09:22,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:09:22,293 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:09:22,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:09:22,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:09:22,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:09:22,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:09:22,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:09:22,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:09:22,294 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:09:22,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:09:22,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:09:22,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:09:22,673 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:09:22,673 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:09:22,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-1.i [2021-02-23 18:09:22,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/679653267/b9dd139bcea94a39b6e0b046a3768b9b/FLAGf3717e425 [2021-02-23 18:09:23,421 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:09:23,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-1.i [2021-02-23 18:09:23,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/679653267/b9dd139bcea94a39b6e0b046a3768b9b/FLAGf3717e425 [2021-02-23 18:09:23,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/679653267/b9dd139bcea94a39b6e0b046a3768b9b [2021-02-23 18:09:23,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:09:23,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:09:23,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:09:23,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:09:23,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:09:23,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:09:23" (1/1) ... [2021-02-23 18:09:23,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a1e715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:23, skipping insertion in model container [2021-02-23 18:09:23,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:09:23" (1/1) ... [2021-02-23 18:09:23,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:09:23,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:09:24,145 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-1.i[22365,22378] [2021-02-23 18:09:24,151 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-1.i[22471,22484] [2021-02-23 18:09:24,153 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-1.i[22595,22608] [2021-02-23 18:09:24,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:09:24,172 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:09:24,217 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-1.i[22365,22378] [2021-02-23 18:09:24,220 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-1.i[22471,22484] [2021-02-23 18:09:24,225 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-1.i[22595,22608] [2021-02-23 18:09:24,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:09:24,305 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:09:24,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:24 WrapperNode [2021-02-23 18:09:24,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:09:24,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:09:24,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:09:24,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:09:24,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:24" (1/1) ... [2021-02-23 18:09:24,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:24" (1/1) ... [2021-02-23 18:09:24,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:24" (1/1) ... [2021-02-23 18:09:24,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:24" (1/1) ... [2021-02-23 18:09:24,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:24" (1/1) ... [2021-02-23 18:09:24,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:24" (1/1) ... [2021-02-23 18:09:24,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:24" (1/1) ... [2021-02-23 18:09:24,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:09:24,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:09:24,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:09:24,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:09:24,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:24" (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 [2021-02-23 18:09:24,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:09:24,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:09:24,590 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:09:24,590 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:09:24,591 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 18:09:24,591 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 18:09:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 18:09:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 18:09:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 18:09:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 18:09:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 18:09:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 18:09:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 18:09:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 18:09:24,595 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 18:09:24,595 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 18:09:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 18:09:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 18:09:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 18:09:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 18:09:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 18:09:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 18:09:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 18:09:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 18:09:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 18:09:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 18:09:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 18:09:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 18:09:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 18:09:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 18:09:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 18:09:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 18:09:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 18:09:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 18:09:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 18:09:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 18:09:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 18:09:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 18:09:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 18:09:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 18:09:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 18:09:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 18:09:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 18:09:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 18:09:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 18:09:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 18:09:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 18:09:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 18:09:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 18:09:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 18:09:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 18:09:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 18:09:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 18:09:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 18:09:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:09:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 18:09:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 18:09:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 18:09:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-23 18:09:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 18:09:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 18:09:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 18:09:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 18:09:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:09:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 18:09:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 18:09:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 18:09:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:09:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 18:09:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 18:09:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 18:09:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 18:09:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 18:09:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 18:09:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 18:09:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 18:09:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 18:09:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 18:09:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 18:09:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 18:09:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 18:09:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 18:09:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 18:09:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 18:09:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 18:09:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 18:09:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 18:09:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 18:09:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 18:09:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 18:09:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 18:09:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 18:09:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 18:09:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 18:09:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 18:09:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 18:09:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 18:09:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 18:09:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 18:09:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 18:09:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 18:09:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 18:09:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 18:09:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 18:09:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 18:09:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 18:09:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 18:09:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:09:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:09:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:09:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:09:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:09:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:09:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:09:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:09:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 18:09:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:09:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 18:09:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:09:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:09:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:09:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:09:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:09:25,282 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:09:25,283 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-02-23 18:09:25,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:09:25 BoogieIcfgContainer [2021-02-23 18:09:25,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:09:25,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:09:25,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:09:25,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:09:25,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:09:23" (1/3) ... [2021-02-23 18:09:25,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450b3549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:09:25, skipping insertion in model container [2021-02-23 18:09:25,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:24" (2/3) ... [2021-02-23 18:09:25,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450b3549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:09:25, skipping insertion in model container [2021-02-23 18:09:25,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:09:25" (3/3) ... [2021-02-23 18:09:25,293 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2021-02-23 18:09:25,300 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:09:25,305 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-02-23 18:09:25,324 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-02-23 18:09:25,348 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:09:25,348 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:09:25,348 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:09:25,348 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:09:25,348 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:09:25,349 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:09:25,349 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:09:25,349 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:09:25,367 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2021-02-23 18:09:25,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-23 18:09:25,376 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:25,377 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] [2021-02-23 18:09:25,377 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:25,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:25,384 INFO L82 PathProgramCache]: Analyzing trace with hash 353569161, now seen corresponding path program 1 times [2021-02-23 18:09:25,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:25,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045901530] [2021-02-23 18:09:25,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:25,472 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:25,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:25,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:25,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:25,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:25,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:25,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:25,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:25,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045901530] [2021-02-23 18:09:25,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:25,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:09:25,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664720943] [2021-02-23 18:09:25,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:09:25,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:25,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:09:25,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:09:25,685 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 3 states. [2021-02-23 18:09:25,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:25,961 INFO L93 Difference]: Finished difference Result 186 states and 222 transitions. [2021-02-23 18:09:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:09:25,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-02-23 18:09:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:25,974 INFO L225 Difference]: With dead ends: 186 [2021-02-23 18:09:25,974 INFO L226 Difference]: Without dead ends: 81 [2021-02-23 18:09:25,978 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 [2021-02-23 18:09:26,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-23 18:09:26,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-02-23 18:09:26,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-23 18:09:26,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2021-02-23 18:09:26,045 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 24 [2021-02-23 18:09:26,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:26,046 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2021-02-23 18:09:26,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:09:26,046 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2021-02-23 18:09:26,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 18:09:26,047 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:26,048 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] [2021-02-23 18:09:26,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:09:26,048 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:26,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:26,049 INFO L82 PathProgramCache]: Analyzing trace with hash 921610958, now seen corresponding path program 1 times [2021-02-23 18:09:26,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:26,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848599262] [2021-02-23 18:09:26,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:26,056 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:26,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:26,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:26,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:26,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:09:26,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:26,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:09:26,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:26,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:09:26,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:26,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:09:26,286 WARN L141 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-02-23 18:09:26,288 WARN L147 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size 33 [2021-02-23 18:09:26,340 WARN L141 QuantifierPusher]: treesize reduction 8, result has 50.0 percent of original size [2021-02-23 18:09:26,341 WARN L147 QuantifierPusher]: treesize reduction 8, result has 50.0 percent of original size 8 [2021-02-23 18:09:26,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:26,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:26,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:26,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:26,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:26,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:26,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:26,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:26,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:26,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:26,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848599262] [2021-02-23 18:09:26,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:26,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 18:09:26,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194242124] [2021-02-23 18:09:26,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 18:09:26,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:26,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 18:09:26,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:09:26,427 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand 10 states. [2021-02-23 18:09:26,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:26,917 INFO L93 Difference]: Finished difference Result 159 states and 167 transitions. [2021-02-23 18:09:26,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 18:09:26,917 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2021-02-23 18:09:26,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:26,920 INFO L225 Difference]: With dead ends: 159 [2021-02-23 18:09:26,920 INFO L226 Difference]: Without dead ends: 157 [2021-02-23 18:09:26,922 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 [2021-02-23 18:09:26,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-02-23 18:09:26,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 89. [2021-02-23 18:09:26,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-02-23 18:09:26,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2021-02-23 18:09:26,946 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 26 [2021-02-23 18:09:26,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:26,946 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-02-23 18:09:26,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 18:09:26,947 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2021-02-23 18:09:26,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-23 18:09:26,948 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:26,948 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] [2021-02-23 18:09:26,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:09:26,949 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:26,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:26,949 INFO L82 PathProgramCache]: Analyzing trace with hash 2032897458, now seen corresponding path program 1 times [2021-02-23 18:09:26,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:26,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673114055] [2021-02-23 18:09:26,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:26,955 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:27,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:27,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:27,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:27,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:09:27,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:27,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:09:27,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:27,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:09:27,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:27,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:09:27,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:27,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:09:27,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:27,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:09:27,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:27,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:09:27,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:27,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:27,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:27,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:27,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:27,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:27,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:27,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:27,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:27,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673114055] [2021-02-23 18:09:27,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:27,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 18:09:27,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272505998] [2021-02-23 18:09:27,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 18:09:27,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:27,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 18:09:27,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-02-23 18:09:27,200 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand 12 states. [2021-02-23 18:09:27,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:27,668 INFO L93 Difference]: Finished difference Result 126 states and 136 transitions. [2021-02-23 18:09:27,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 18:09:27,669 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2021-02-23 18:09:27,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:27,671 INFO L225 Difference]: With dead ends: 126 [2021-02-23 18:09:27,672 INFO L226 Difference]: Without dead ends: 124 [2021-02-23 18:09:27,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-02-23 18:09:27,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-02-23 18:09:27,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2021-02-23 18:09:27,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-02-23 18:09:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 118 transitions. [2021-02-23 18:09:27,702 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 118 transitions. Word has length 35 [2021-02-23 18:09:27,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:27,702 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 118 transitions. [2021-02-23 18:09:27,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 18:09:27,702 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 118 transitions. [2021-02-23 18:09:27,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 18:09:27,704 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:27,704 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, 1] [2021-02-23 18:09:27,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:09:27,705 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:27,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:27,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1829183814, now seen corresponding path program 1 times [2021-02-23 18:09:27,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:27,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213051063] [2021-02-23 18:09:27,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:27,714 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:27,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:27,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:27,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:27,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:09:27,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:27,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:27,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:27,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:27,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:27,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213051063] [2021-02-23 18:09:27,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:27,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:09:27,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831237754] [2021-02-23 18:09:27,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:09:27,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:27,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:09:27,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:09:27,803 INFO L87 Difference]: Start difference. First operand 109 states and 118 transitions. Second operand 4 states. [2021-02-23 18:09:27,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:27,987 INFO L93 Difference]: Finished difference Result 238 states and 256 transitions. [2021-02-23 18:09:27,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:09:27,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2021-02-23 18:09:27,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:27,990 INFO L225 Difference]: With dead ends: 238 [2021-02-23 18:09:27,990 INFO L226 Difference]: Without dead ends: 170 [2021-02-23 18:09:27,991 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 [2021-02-23 18:09:27,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-02-23 18:09:28,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 129. [2021-02-23 18:09:28,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2021-02-23 18:09:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2021-02-23 18:09:28,021 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 40 [2021-02-23 18:09:28,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:28,022 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2021-02-23 18:09:28,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:09:28,022 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2021-02-23 18:09:28,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-23 18:09:28,024 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:28,024 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, 1, 1] [2021-02-23 18:09:28,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:09:28,024 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:28,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:28,025 INFO L82 PathProgramCache]: Analyzing trace with hash -924058287, now seen corresponding path program 1 times [2021-02-23 18:09:28,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:28,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889938491] [2021-02-23 18:09:28,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:28,030 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:28,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:28,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:28,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:28,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:09:28,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:28,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:09:28,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:28,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-23 18:09:28,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:28,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-23 18:09:28,158 WARN L141 QuantifierPusher]: treesize reduction 9, result has 83.3 percent of original size [2021-02-23 18:09:28,159 WARN L147 QuantifierPusher]: treesize reduction 9, result has 83.3 percent of original size 45 [2021-02-23 18:09:28,196 WARN L141 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-02-23 18:09:28,197 WARN L147 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size 25 [2021-02-23 18:09:28,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:28,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:09:28,214 WARN L141 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-02-23 18:09:28,215 WARN L147 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size 18 [2021-02-23 18:09:28,229 WARN L141 QuantifierPusher]: treesize reduction 17, result has 61.4 percent of original size [2021-02-23 18:09:28,230 WARN L147 QuantifierPusher]: treesize reduction 17, result has 61.4 percent of original size 27 [2021-02-23 18:09:28,249 WARN L141 QuantifierPusher]: treesize reduction 17, result has 62.2 percent of original size [2021-02-23 18:09:28,250 WARN L147 QuantifierPusher]: treesize reduction 17, result has 62.2 percent of original size 28 [2021-02-23 18:09:28,270 WARN L141 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-02-23 18:09:28,271 WARN L147 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size 10 [2021-02-23 18:09:28,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:28,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:28,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:28,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:28,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:28,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:28,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:28,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:28,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:28,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:28,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889938491] [2021-02-23 18:09:28,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:28,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 18:09:28,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974685107] [2021-02-23 18:09:28,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 18:09:28,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:28,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 18:09:28,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-02-23 18:09:28,407 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand 14 states. [2021-02-23 18:09:29,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:29,236 INFO L93 Difference]: Finished difference Result 219 states and 232 transitions. [2021-02-23 18:09:29,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 18:09:29,236 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2021-02-23 18:09:29,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:29,240 INFO L225 Difference]: With dead ends: 219 [2021-02-23 18:09:29,240 INFO L226 Difference]: Without dead ends: 189 [2021-02-23 18:09:29,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=666, Unknown=0, NotChecked=0, Total=870 [2021-02-23 18:09:29,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-02-23 18:09:29,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 137. [2021-02-23 18:09:29,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2021-02-23 18:09:29,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2021-02-23 18:09:29,291 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 41 [2021-02-23 18:09:29,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:29,292 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2021-02-23 18:09:29,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 18:09:29,292 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2021-02-23 18:09:29,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-23 18:09:29,302 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:29,302 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, 1] [2021-02-23 18:09:29,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:09:29,303 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:29,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:29,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1422998378, now seen corresponding path program 1 times [2021-02-23 18:09:29,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:29,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693536400] [2021-02-23 18:09:29,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:29,361 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:09:29,365 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:29,410 ERROR L253 erpolLogProxyWrapper]: Interpolant 16 not inductive [2021-02-23 18:09:29,433 ERROR L275 FreeRefinementEngine]: Caught unknown exception: generated interpolants did not pass sanity check [2021-02-23 18:09:29,433 WARN L340 FreeRefinementEngine]: Global settings require throwing the following exception [2021-02-23 18:09:29,434 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 18:09:29,435 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:228) 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.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:219) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) 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:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-23 18:09:29,442 INFO L168 Benchmark]: Toolchain (without parser) took 5712.89 ms. Allocated memory was 170.9 MB in the beginning and 213.9 MB in the end (delta: 43.0 MB). Free memory was 145.6 MB in the beginning and 97.9 MB in the end (delta: 47.7 MB). Peak memory consumption was 92.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:29,443 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 170.9 MB. Free memory is still 143.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:09:29,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 559.41 ms. Allocated memory is still 170.9 MB. Free memory was 144.5 MB in the beginning and 122.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:29,446 INFO L168 Benchmark]: Boogie Preprocessor took 131.99 ms. Allocated memory is still 170.9 MB. Free memory was 122.4 MB in the beginning and 119.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:29,449 INFO L168 Benchmark]: RCFGBuilder took 842.09 ms. Allocated memory is still 170.9 MB. Free memory was 119.6 MB in the beginning and 107.2 MB in the end (delta: 12.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:29,450 INFO L168 Benchmark]: TraceAbstraction took 4154.26 ms. Allocated memory was 170.9 MB in the beginning and 213.9 MB in the end (delta: 43.0 MB). Free memory was 106.7 MB in the beginning and 97.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:29,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 170.9 MB. Free memory is still 143.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 559.41 ms. Allocated memory is still 170.9 MB. Free memory was 144.5 MB in the beginning and 122.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 131.99 ms. Allocated memory is still 170.9 MB. Free memory was 122.4 MB in the beginning and 119.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 842.09 ms. Allocated memory is still 170.9 MB. Free memory was 119.6 MB in the beginning and 107.2 MB in the end (delta: 12.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4154.26 ms. Allocated memory was 170.9 MB in the beginning and 213.9 MB in the end (delta: 43.0 MB). Free memory was 106.7 MB in the beginning and 97.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 51.7 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:228) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...