/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-b7b32d2 [2021-02-21 20:41:40,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:41:40,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:41:40,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:41:40,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:41:40,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:41:40,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:41:40,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:41:40,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:41:40,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:41:40,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:41:40,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:41:40,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:41:40,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:41:40,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:41:40,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:41:40,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:41:40,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:41:40,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:41:40,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:41:40,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:41:40,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:41:40,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:41:40,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:41:40,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 20:41:40,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 20:41:40,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 20:41:40,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 20:41:40,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 20:41:40,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 20:41:40,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:41:40,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:41:40,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:41:40,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:41:40,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:41:40,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:41:40,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:41:40,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:41:40,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:41:40,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:41:40,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:41:40,874 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:41:40,900 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:41:40,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:41:40,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:41:40,906 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:41:40,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:41:40,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:41:40,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:41:40,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:41:40,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:41:40,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:41:40,909 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:41:40,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:41:40,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:41:40,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:41:40,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:41:40,910 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:41:40,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:41:40,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:41:40,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:41:40,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:41:40,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:41:40,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:41:40,912 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:41:41,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:41:41,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:41:41,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:41:41,359 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:41:41,360 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:41:41,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-1.i [2021-02-21 20:41:41,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb6038ad7/03e863e9b89748acb09ea2b5d6b157d6/FLAGf03001c5d [2021-02-21 20:41:42,103 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:41:42,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-1.i [2021-02-21 20:41:42,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb6038ad7/03e863e9b89748acb09ea2b5d6b157d6/FLAGf03001c5d [2021-02-21 20:41:42,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb6038ad7/03e863e9b89748acb09ea2b5d6b157d6 [2021-02-21 20:41:42,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:41:42,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:41:42,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:41:42,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:41:42,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:41:42,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:41:42" (1/1) ... [2021-02-21 20:41:42,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6c6836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:42, skipping insertion in model container [2021-02-21 20:41:42,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:41:42" (1/1) ... [2021-02-21 20:41:42,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:41:42,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:41:42,933 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] [2021-02-21 20:41:42,944 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] [2021-02-21 20:41:42,949 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] [2021-02-21 20:41:42,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:41:42,973 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:41:43,031 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] [2021-02-21 20:41:43,033 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] [2021-02-21 20:41:43,034 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] [2021-02-21 20:41:43,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:41:43,092 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:41:43,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:43 WrapperNode [2021-02-21 20:41:43,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:41:43,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:41:43,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:41:43,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:41:43,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:43" (1/1) ... [2021-02-21 20:41:43,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:43" (1/1) ... [2021-02-21 20:41:43,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:43" (1/1) ... [2021-02-21 20:41:43,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:43" (1/1) ... [2021-02-21 20:41:43,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:43" (1/1) ... [2021-02-21 20:41:43,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:43" (1/1) ... [2021-02-21 20:41:43,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:43" (1/1) ... [2021-02-21 20:41:43,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:41:43,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:41:43,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:41:43,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:41:43,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:43" (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 [2021-02-21 20:41:43,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:41:43,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:41:43,309 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:41:43,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:41:43,309 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 20:41:43,309 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 20:41:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 20:41:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 20:41:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 20:41:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 20:41:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 20:41:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 20:41:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 20:41:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 20:41:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 20:41:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 20:41:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 20:41:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 20:41:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 20:41:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 20:41:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 20:41:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 20:41:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 20:41:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 20:41:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 20:41:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 20:41:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 20:41:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 20:41:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 20:41:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 20:41:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 20:41:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 20:41:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 20:41:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 20:41:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 20:41:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 20:41:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 20:41:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 20:41:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 20:41:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 20:41:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 20:41:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 20:41:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 20:41:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 20:41:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 20:41:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 20:41:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 20:41:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 20:41:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 20:41:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 20:41:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 20:41:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 20:41:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 20:41:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 20:41:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 20:41:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 20:41:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 20:41:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 20:41:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-21 20:41:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 20:41:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 20:41:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 20:41:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 20:41:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:41:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 20:41:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 20:41:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 20:41:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 20:41:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 20:41:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 20:41:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 20:41:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 20:41:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 20:41:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 20:41:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 20:41:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 20:41:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 20:41:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 20:41:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 20:41:43,322 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 20:41:43,322 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 20:41:43,322 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 20:41:43,322 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 20:41:43,322 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 20:41:43,323 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 20:41:43,323 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 20:41:43,323 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 20:41:43,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 20:41:43,323 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 20:41:43,323 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 20:41:43,324 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 20:41:43,324 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 20:41:43,324 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 20:41:43,324 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 20:41:43,324 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 20:41:43,324 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 20:41:43,324 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 20:41:43,325 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 20:41:43,325 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 20:41:43,325 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 20:41:43,325 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 20:41:43,325 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 20:41:43,325 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 20:41:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 20:41:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 20:41:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 20:41:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 20:41:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:41:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:41:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 20:41:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 20:41:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:41:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:41:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:41:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 20:41:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 20:41:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:41:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 20:41:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:41:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:41:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:41:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:41:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:41:44,193 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:41:44,193 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-02-21 20:41:44,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:41:44 BoogieIcfgContainer [2021-02-21 20:41:44,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:41:44,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:41:44,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:41:44,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:41:44,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:41:42" (1/3) ... [2021-02-21 20:41:44,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ff0e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:41:44, skipping insertion in model container [2021-02-21 20:41:44,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:43" (2/3) ... [2021-02-21 20:41:44,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ff0e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:41:44, skipping insertion in model container [2021-02-21 20:41:44,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:41:44" (3/3) ... [2021-02-21 20:41:44,207 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2021-02-21 20:41:44,215 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:41:44,220 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-02-21 20:41:44,243 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-02-21 20:41:44,293 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:41:44,294 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:41:44,294 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:41:44,294 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:41:44,294 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:41:44,294 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:41:44,295 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:41:44,295 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:41:44,312 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2021-02-21 20:41:44,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-21 20:41:44,322 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:44,323 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] [2021-02-21 20:41:44,323 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:44,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:44,330 INFO L82 PathProgramCache]: Analyzing trace with hash 353569161, now seen corresponding path program 1 times [2021-02-21 20:41:44,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:44,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302166656] [2021-02-21 20:41:44,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:44,423 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:44,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:44,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:44,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:44,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:44,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:44,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:44,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:44,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302166656] [2021-02-21 20:41:44,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:44,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 20:41:44,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397248647] [2021-02-21 20:41:44,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 20:41:44,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:44,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 20:41:44,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 20:41:44,693 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 3 states. [2021-02-21 20:41:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:44,931 INFO L93 Difference]: Finished difference Result 186 states and 222 transitions. [2021-02-21 20:41:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 20:41:44,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-02-21 20:41:44,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:44,944 INFO L225 Difference]: With dead ends: 186 [2021-02-21 20:41:44,944 INFO L226 Difference]: Without dead ends: 81 [2021-02-21 20:41:44,948 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 [2021-02-21 20:41:44,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-21 20:41:44,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-02-21 20:41:44,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-21 20:41:44,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2021-02-21 20:41:44,996 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 24 [2021-02-21 20:41:44,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:44,997 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2021-02-21 20:41:44,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 20:41:44,997 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2021-02-21 20:41:44,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 20:41:44,998 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:44,999 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] [2021-02-21 20:41:44,999 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:41:44,999 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:45,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:45,000 INFO L82 PathProgramCache]: Analyzing trace with hash 921610958, now seen corresponding path program 1 times [2021-02-21 20:41:45,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:45,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637315027] [2021-02-21 20:41:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:45,006 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:45,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:45,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:41:45,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:41:45,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 20:41:45,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 20:41:45,173 WARN L141 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-02-21 20:41:45,175 WARN L147 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size 33 [2021-02-21 20:41:45,208 WARN L141 QuantifierPusher]: treesize reduction 8, result has 50.0 percent of original size [2021-02-21 20:41:45,209 WARN L147 QuantifierPusher]: treesize reduction 8, result has 50.0 percent of original size 8 [2021-02-21 20:41:45,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:45,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:45,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:45,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:45,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:45,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637315027] [2021-02-21 20:41:45,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:45,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 20:41:45,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362098042] [2021-02-21 20:41:45,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 20:41:45,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:45,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 20:41:45,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 20:41:45,323 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand 10 states. [2021-02-21 20:41:45,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:45,800 INFO L93 Difference]: Finished difference Result 159 states and 167 transitions. [2021-02-21 20:41:45,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 20:41:45,801 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2021-02-21 20:41:45,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:45,804 INFO L225 Difference]: With dead ends: 159 [2021-02-21 20:41:45,804 INFO L226 Difference]: Without dead ends: 157 [2021-02-21 20:41:45,806 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 [2021-02-21 20:41:45,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-02-21 20:41:45,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 89. [2021-02-21 20:41:45,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-02-21 20:41:45,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2021-02-21 20:41:45,830 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 26 [2021-02-21 20:41:45,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:45,830 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-02-21 20:41:45,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 20:41:45,830 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2021-02-21 20:41:45,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-21 20:41:45,832 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:45,832 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] [2021-02-21 20:41:45,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:41:45,833 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:45,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:45,833 INFO L82 PathProgramCache]: Analyzing trace with hash 2032897458, now seen corresponding path program 1 times [2021-02-21 20:41:45,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:45,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200301229] [2021-02-21 20:41:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:45,839 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:45,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:45,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:41:45,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:41:45,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:41:45,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:41:45,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 20:41:45,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 20:41:45,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:41:45,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:45,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:46,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:46,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:46,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200301229] [2021-02-21 20:41:46,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:46,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 20:41:46,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868817607] [2021-02-21 20:41:46,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 20:41:46,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:46,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 20:41:46,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-02-21 20:41:46,085 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand 12 states. [2021-02-21 20:41:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:46,619 INFO L93 Difference]: Finished difference Result 126 states and 136 transitions. [2021-02-21 20:41:46,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 20:41:46,620 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2021-02-21 20:41:46,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:46,622 INFO L225 Difference]: With dead ends: 126 [2021-02-21 20:41:46,622 INFO L226 Difference]: Without dead ends: 124 [2021-02-21 20:41:46,623 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 [2021-02-21 20:41:46,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-02-21 20:41:46,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2021-02-21 20:41:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-02-21 20:41:46,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 118 transitions. [2021-02-21 20:41:46,649 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 118 transitions. Word has length 35 [2021-02-21 20:41:46,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:46,649 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 118 transitions. [2021-02-21 20:41:46,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 20:41:46,650 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 118 transitions. [2021-02-21 20:41:46,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-21 20:41:46,651 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:46,651 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] [2021-02-21 20:41:46,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:41:46,652 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:46,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:46,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1829183814, now seen corresponding path program 1 times [2021-02-21 20:41:46,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:46,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143445584] [2021-02-21 20:41:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:46,658 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:46,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:41:46,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:46,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:46,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143445584] [2021-02-21 20:41:46,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:46,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:41:46,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324651580] [2021-02-21 20:41:46,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:41:46,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:46,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:41:46,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:41:46,766 INFO L87 Difference]: Start difference. First operand 109 states and 118 transitions. Second operand 4 states. [2021-02-21 20:41:46,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:46,943 INFO L93 Difference]: Finished difference Result 238 states and 256 transitions. [2021-02-21 20:41:46,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:41:46,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2021-02-21 20:41:46,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:46,945 INFO L225 Difference]: With dead ends: 238 [2021-02-21 20:41:46,946 INFO L226 Difference]: Without dead ends: 170 [2021-02-21 20:41:46,947 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 [2021-02-21 20:41:46,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-02-21 20:41:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 129. [2021-02-21 20:41:46,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2021-02-21 20:41:46,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2021-02-21 20:41:46,990 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 40 [2021-02-21 20:41:46,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:46,990 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2021-02-21 20:41:46,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:41:46,991 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2021-02-21 20:41:46,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-21 20:41:46,992 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:46,992 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] [2021-02-21 20:41:46,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:41:46,993 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:46,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:46,993 INFO L82 PathProgramCache]: Analyzing trace with hash -924058287, now seen corresponding path program 1 times [2021-02-21 20:41:46,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:46,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300323271] [2021-02-21 20:41:46,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:46,999 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:47,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:47,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:41:47,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:41:47,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-21 20:41:47,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-21 20:41:47,119 WARN L141 QuantifierPusher]: treesize reduction 9, result has 83.3 percent of original size [2021-02-21 20:41:47,123 WARN L147 QuantifierPusher]: treesize reduction 9, result has 83.3 percent of original size 45 [2021-02-21 20:41:47,164 WARN L141 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-02-21 20:41:47,167 WARN L147 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size 25 [2021-02-21 20:41:47,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:41:47,189 WARN L141 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-02-21 20:41:47,193 WARN L147 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size 18 [2021-02-21 20:41:47,208 WARN L141 QuantifierPusher]: treesize reduction 17, result has 61.4 percent of original size [2021-02-21 20:41:47,209 WARN L147 QuantifierPusher]: treesize reduction 17, result has 61.4 percent of original size 27 [2021-02-21 20:41:47,228 WARN L141 QuantifierPusher]: treesize reduction 17, result has 62.2 percent of original size [2021-02-21 20:41:47,229 WARN L147 QuantifierPusher]: treesize reduction 17, result has 62.2 percent of original size 28 [2021-02-21 20:41:47,250 WARN L141 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-02-21 20:41:47,251 WARN L147 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size 10 [2021-02-21 20:41:47,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:47,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:47,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:47,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:47,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:47,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:47,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300323271] [2021-02-21 20:41:47,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:47,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 20:41:47,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383206752] [2021-02-21 20:41:47,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 20:41:47,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:47,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 20:41:47,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-02-21 20:41:47,365 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand 14 states. [2021-02-21 20:41:48,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:48,260 INFO L93 Difference]: Finished difference Result 219 states and 232 transitions. [2021-02-21 20:41:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-21 20:41:48,261 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2021-02-21 20:41:48,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:48,262 INFO L225 Difference]: With dead ends: 219 [2021-02-21 20:41:48,262 INFO L226 Difference]: Without dead ends: 189 [2021-02-21 20:41:48,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2021-02-21 20:41:48,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-02-21 20:41:48,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 137. [2021-02-21 20:41:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2021-02-21 20:41:48,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2021-02-21 20:41:48,294 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 41 [2021-02-21 20:41:48,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:48,294 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2021-02-21 20:41:48,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 20:41:48,294 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2021-02-21 20:41:48,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-21 20:41:48,296 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:48,296 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] [2021-02-21 20:41:48,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:41:48,297 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:48,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:48,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1422998378, now seen corresponding path program 1 times [2021-02-21 20:41:48,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:48,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501098158] [2021-02-21 20:41:48,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:48,358 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:41:48,362 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:48,408 ERROR L253 erpolLogProxyWrapper]: Interpolant 16 not inductive [2021-02-21 20:41:48,429 ERROR L275 FreeRefinementEngine]: Caught unknown exception: generated interpolants did not pass sanity check [2021-02-21 20:41:48,430 WARN L340 FreeRefinementEngine]: Global settings require throwing the following exception [2021-02-21 20:41:48,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 20:41:48,430 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-21 20:41:48,435 INFO L168 Benchmark]: Toolchain (without parser) took 6015.54 ms. Allocated memory was 157.3 MB in the beginning and 189.8 MB in the end (delta: 32.5 MB). Free memory was 132.9 MB in the beginning and 75.9 MB in the end (delta: 57.0 MB). Peak memory consumption was 91.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:48,435 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 157.3 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:41:48,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.84 ms. Allocated memory is still 157.3 MB. Free memory was 132.0 MB in the beginning and 109.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:48,437 INFO L168 Benchmark]: Boogie Preprocessor took 63.96 ms. Allocated memory is still 157.3 MB. Free memory was 109.5 MB in the beginning and 106.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:48,437 INFO L168 Benchmark]: RCFGBuilder took 1037.51 ms. Allocated memory is still 157.3 MB. Free memory was 106.8 MB in the beginning and 92.7 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:48,438 INFO L168 Benchmark]: TraceAbstraction took 4234.38 ms. Allocated memory was 157.3 MB in the beginning and 189.8 MB in the end (delta: 32.5 MB). Free memory was 92.7 MB in the beginning and 75.9 MB in the end (delta: 16.8 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:48,441 INFO L339 ainManager$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 157.3 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 656.84 ms. Allocated memory is still 157.3 MB. Free memory was 132.0 MB in the beginning and 109.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.96 ms. Allocated memory is still 157.3 MB. Free memory was 109.5 MB in the beginning and 106.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1037.51 ms. Allocated memory is still 157.3 MB. Free memory was 106.8 MB in the beginning and 92.7 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4234.38 ms. Allocated memory was 157.3 MB in the beginning and 189.8 MB in the end (delta: 32.5 MB). Free memory was 92.7 MB in the beginning and 75.9 MB in the end (delta: 16.8 MB). Peak memory consumption was 50.3 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...