/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:29:58,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:29:58,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:29:58,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:29:58,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:29:58,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:29:58,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:29:58,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:29:58,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:29:58,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:29:58,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:29:58,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:29:58,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:29:58,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:29:58,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:29:58,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:29:58,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:29:58,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:29:58,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:29:58,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:29:58,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:29:58,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:29:58,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:29:58,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:29:58,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 13:29:58,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 13:29:58,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 13:29:58,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 13:29:58,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 13:29:58,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 13:29:58,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 13:29:58,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 13:29:58,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 13:29:58,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 13:29:58,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 13:29:58,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 13:29:58,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 13:29:58,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 13:29:58,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:29:58,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:29:58,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:29:58,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 13:29:58,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:29:58,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:29:58,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:29:58,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:29:58,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:29:58,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:29:58,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:29:58,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:29:58,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:29:58,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:29:58,915 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:29:58,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:29:58,915 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:29:58,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:29:58,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:29:58,916 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:29:58,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:29:58,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:29:58,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:29:58,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:29:58,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:29:58,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:29:58,918 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:29:59,219 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:29:59,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:29:59,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:29:59,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:29:59,237 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:29:59,238 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-07-17 13:29:59,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07e71458f/a445c28b0a3b49a499c1161f282fcbb2/FLAGcd05f2e5a [2020-07-17 13:29:59,843 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:29:59,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-07-17 13:29:59,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07e71458f/a445c28b0a3b49a499c1161f282fcbb2/FLAGcd05f2e5a [2020-07-17 13:30:00,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07e71458f/a445c28b0a3b49a499c1161f282fcbb2 [2020-07-17 13:30:00,139 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:30:00,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:30:00,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:30:00,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:30:00,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:30:00,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:30:00" (1/1) ... [2020-07-17 13:30:00,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@476c127c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:00, skipping insertion in model container [2020-07-17 13:30:00,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:30:00" (1/1) ... [2020-07-17 13:30:00,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:30:00,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:30:00,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:30:00,667 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:30:00,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:30:00,778 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:30:00,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:00 WrapperNode [2020-07-17 13:30:00,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:30:00,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:30:00,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:30:00,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:30:00,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:00" (1/1) ... [2020-07-17 13:30:00,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:00" (1/1) ... [2020-07-17 13:30:00,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:00" (1/1) ... [2020-07-17 13:30:00,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:00" (1/1) ... [2020-07-17 13:30:00,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:00" (1/1) ... [2020-07-17 13:30:00,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:00" (1/1) ... [2020-07-17 13:30:00,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:00" (1/1) ... [2020-07-17 13:30:00,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:30:00,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:30:00,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:30:00,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:30:00,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:30:00,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:30:00,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:30:00,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:30:00,919 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 13:30:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 13:30:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 13:30:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 13:30:00,921 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 13:30:00,921 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 13:30:00,921 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 13:30:00,921 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 13:30:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 13:30:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 13:30:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 13:30:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 13:30:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 13:30:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 13:30:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 13:30:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 13:30:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 13:30:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 13:30:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 13:30:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 13:30:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 13:30:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 13:30:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 13:30:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 13:30:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 13:30:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 13:30:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 13:30:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 13:30:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 13:30:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 13:30:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 13:30:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 13:30:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 13:30:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 13:30:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 13:30:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 13:30:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 13:30:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 13:30:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 13:30:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 13:30:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 13:30:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 13:30:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 13:30:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 13:30:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 13:30:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 13:30:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 13:30:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 13:30:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 13:30:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 13:30:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 13:30:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 13:30:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 13:30:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 13:30:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 13:30:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 13:30:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 13:30:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 13:30:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-17 13:30:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 13:30:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 13:30:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-17 13:30:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 13:30:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 13:30:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-17 13:30:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 13:30:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 13:30:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 13:30:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 13:30:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 13:30:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 13:30:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 13:30:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 13:30:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 13:30:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 13:30:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 13:30:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 13:30:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 13:30:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 13:30:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 13:30:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 13:30:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 13:30:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 13:30:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 13:30:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 13:30:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 13:30:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 13:30:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 13:30:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 13:30:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 13:30:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 13:30:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 13:30:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 13:30:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 13:30:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 13:30:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 13:30:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 13:30:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 13:30:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 13:30:00,940 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 13:30:00,940 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 13:30:00,940 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-17 13:30:00,940 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 13:30:00,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 13:30:00,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:30:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:30:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 13:30:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 13:30:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 13:30:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 13:30:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:30:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:30:01,674 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:30:01,674 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-07-17 13:30:01,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:30:01 BoogieIcfgContainer [2020-07-17 13:30:01,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:30:01,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:30:01,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:30:01,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:30:01,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:30:00" (1/3) ... [2020-07-17 13:30:01,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765583f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:30:01, skipping insertion in model container [2020-07-17 13:30:01,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:00" (2/3) ... [2020-07-17 13:30:01,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765583f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:30:01, skipping insertion in model container [2020-07-17 13:30:01,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:30:01" (3/3) ... [2020-07-17 13:30:01,691 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-07-17 13:30:01,703 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:30:01,714 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-07-17 13:30:01,731 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-07-17 13:30:01,757 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:30:01,758 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:30:01,758 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:30:01,758 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:30:01,759 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:30:01,759 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:30:01,759 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:30:01,760 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:30:01,784 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-07-17 13:30:01,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-17 13:30:01,796 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:01,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:01,798 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:01,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:01,806 INFO L82 PathProgramCache]: Analyzing trace with hash 885652866, now seen corresponding path program 1 times [2020-07-17 13:30:01,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:01,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805814340] [2020-07-17 13:30:01,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:02,073 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:02,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805814340] [2020-07-17 13:30:02,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:02,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 13:30:02,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147383887] [2020-07-17 13:30:02,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 13:30:02,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:02,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 13:30:02,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:30:02,111 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-07-17 13:30:02,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:02,573 INFO L93 Difference]: Finished difference Result 360 states and 478 transitions. [2020-07-17 13:30:02,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 13:30:02,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-17 13:30:02,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:02,589 INFO L225 Difference]: With dead ends: 360 [2020-07-17 13:30:02,589 INFO L226 Difference]: Without dead ends: 194 [2020-07-17 13:30:02,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:30:02,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-07-17 13:30:02,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-07-17 13:30:02,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-07-17 13:30:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2020-07-17 13:30:02,666 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 12 [2020-07-17 13:30:02,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:02,666 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2020-07-17 13:30:02,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 13:30:02,667 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2020-07-17 13:30:02,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-17 13:30:02,668 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:02,668 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] [2020-07-17 13:30:02,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:30:02,669 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:02,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:02,670 INFO L82 PathProgramCache]: Analyzing trace with hash 684663316, now seen corresponding path program 1 times [2020-07-17 13:30:02,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:02,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805457700] [2020-07-17 13:30:02,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:02,737 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:02,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805457700] [2020-07-17 13:30:02,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:02,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 13:30:02,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105574463] [2020-07-17 13:30:02,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 13:30:02,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:02,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 13:30:02,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:30:02,741 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand 4 states. [2020-07-17 13:30:03,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:03,016 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2020-07-17 13:30:03,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 13:30:03,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-17 13:30:03,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:03,019 INFO L225 Difference]: With dead ends: 170 [2020-07-17 13:30:03,019 INFO L226 Difference]: Without dead ends: 165 [2020-07-17 13:30:03,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:30:03,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-07-17 13:30:03,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-07-17 13:30:03,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-07-17 13:30:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-07-17 13:30:03,046 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 24 [2020-07-17 13:30:03,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:03,047 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-07-17 13:30:03,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 13:30:03,047 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-07-17 13:30:03,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-17 13:30:03,048 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:03,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:03,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:30:03,049 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:03,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:03,050 INFO L82 PathProgramCache]: Analyzing trace with hash -265499727, now seen corresponding path program 1 times [2020-07-17 13:30:03,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:03,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295399171] [2020-07-17 13:30:03,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:03,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:03,244 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:03,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295399171] [2020-07-17 13:30:03,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:03,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 13:30:03,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619119196] [2020-07-17 13:30:03,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 13:30:03,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:03,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 13:30:03,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-17 13:30:03,248 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 8 states. [2020-07-17 13:30:03,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:03,787 INFO L93 Difference]: Finished difference Result 259 states and 276 transitions. [2020-07-17 13:30:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 13:30:03,787 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-07-17 13:30:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:03,789 INFO L225 Difference]: With dead ends: 259 [2020-07-17 13:30:03,790 INFO L226 Difference]: Without dead ends: 254 [2020-07-17 13:30:03,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-07-17 13:30:03,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-07-17 13:30:03,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 159. [2020-07-17 13:30:03,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-07-17 13:30:03,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2020-07-17 13:30:03,813 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 26 [2020-07-17 13:30:03,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:03,813 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2020-07-17 13:30:03,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 13:30:03,813 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2020-07-17 13:30:03,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-17 13:30:03,814 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:03,815 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] [2020-07-17 13:30:03,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 13:30:03,815 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:03,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:03,816 INFO L82 PathProgramCache]: Analyzing trace with hash 72562886, now seen corresponding path program 1 times [2020-07-17 13:30:03,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:03,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651510472] [2020-07-17 13:30:03,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:03,899 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:03,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651510472] [2020-07-17 13:30:03,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:03,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 13:30:03,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954074227] [2020-07-17 13:30:03,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 13:30:03,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:03,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 13:30:03,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:30:03,901 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand 6 states. [2020-07-17 13:30:04,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:04,309 INFO L93 Difference]: Finished difference Result 382 states and 407 transitions. [2020-07-17 13:30:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 13:30:04,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-07-17 13:30:04,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:04,311 INFO L225 Difference]: With dead ends: 382 [2020-07-17 13:30:04,311 INFO L226 Difference]: Without dead ends: 253 [2020-07-17 13:30:04,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-17 13:30:04,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-07-17 13:30:04,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 162. [2020-07-17 13:30:04,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-07-17 13:30:04,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2020-07-17 13:30:04,333 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 32 [2020-07-17 13:30:04,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:04,334 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions. [2020-07-17 13:30:04,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 13:30:04,334 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions. [2020-07-17 13:30:04,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-17 13:30:04,335 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:04,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:04,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 13:30:04,336 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:04,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:04,336 INFO L82 PathProgramCache]: Analyzing trace with hash 972027235, now seen corresponding path program 1 times [2020-07-17 13:30:04,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:04,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896899373] [2020-07-17 13:30:04,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:04,417 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:04,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896899373] [2020-07-17 13:30:04,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:04,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 13:30:04,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140198652] [2020-07-17 13:30:04,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 13:30:04,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:04,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 13:30:04,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:30:04,420 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand 6 states. [2020-07-17 13:30:04,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:04,738 INFO L93 Difference]: Finished difference Result 271 states and 288 transitions. [2020-07-17 13:30:04,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 13:30:04,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-07-17 13:30:04,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:04,741 INFO L225 Difference]: With dead ends: 271 [2020-07-17 13:30:04,741 INFO L226 Difference]: Without dead ends: 239 [2020-07-17 13:30:04,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-17 13:30:04,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-07-17 13:30:04,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 161. [2020-07-17 13:30:04,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-17 13:30:04,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2020-07-17 13:30:04,760 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 34 [2020-07-17 13:30:04,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:04,761 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2020-07-17 13:30:04,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 13:30:04,761 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2020-07-17 13:30:04,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 13:30:04,762 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:04,763 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] [2020-07-17 13:30:04,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 13:30:04,763 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:04,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:04,764 INFO L82 PathProgramCache]: Analyzing trace with hash -401575995, now seen corresponding path program 1 times [2020-07-17 13:30:04,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:04,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060305624] [2020-07-17 13:30:04,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:04,861 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:04,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060305624] [2020-07-17 13:30:04,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:04,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 13:30:04,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424858790] [2020-07-17 13:30:04,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 13:30:04,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:04,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 13:30:04,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 13:30:04,867 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand 7 states. [2020-07-17 13:30:05,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:05,460 INFO L93 Difference]: Finished difference Result 245 states and 261 transitions. [2020-07-17 13:30:05,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 13:30:05,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-07-17 13:30:05,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:05,463 INFO L225 Difference]: With dead ends: 245 [2020-07-17 13:30:05,463 INFO L226 Difference]: Without dead ends: 241 [2020-07-17 13:30:05,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-07-17 13:30:05,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-07-17 13:30:05,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 157. [2020-07-17 13:30:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-07-17 13:30:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2020-07-17 13:30:05,487 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 38 [2020-07-17 13:30:05,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:05,488 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2020-07-17 13:30:05,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 13:30:05,488 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2020-07-17 13:30:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-17 13:30:05,493 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:05,494 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, 1] [2020-07-17 13:30:05,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 13:30:05,494 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:05,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:05,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1938604912, now seen corresponding path program 1 times [2020-07-17 13:30:05,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:05,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154710429] [2020-07-17 13:30:05,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:05,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:05,589 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:05,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154710429] [2020-07-17 13:30:05,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:05,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 13:30:05,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430385235] [2020-07-17 13:30:05,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 13:30:05,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:05,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 13:30:05,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:30:05,592 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand 4 states. [2020-07-17 13:30:05,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:05,816 INFO L93 Difference]: Finished difference Result 267 states and 287 transitions. [2020-07-17 13:30:05,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 13:30:05,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-07-17 13:30:05,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:05,824 INFO L225 Difference]: With dead ends: 267 [2020-07-17 13:30:05,824 INFO L226 Difference]: Without dead ends: 196 [2020-07-17 13:30:05,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:30:05,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-07-17 13:30:05,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 160. [2020-07-17 13:30:05,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-07-17 13:30:05,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2020-07-17 13:30:05,850 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 42 [2020-07-17 13:30:05,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:05,853 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2020-07-17 13:30:05,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 13:30:05,853 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2020-07-17 13:30:05,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-17 13:30:05,860 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:05,861 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, 1, 1, 1] [2020-07-17 13:30:05,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 13:30:05,861 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:05,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:05,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1017153069, now seen corresponding path program 1 times [2020-07-17 13:30:05,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:05,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604441339] [2020-07-17 13:30:05,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:05,945 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:05,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604441339] [2020-07-17 13:30:05,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:05,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 13:30:05,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322610152] [2020-07-17 13:30:05,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 13:30:05,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:05,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 13:30:05,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:30:05,947 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand 4 states. [2020-07-17 13:30:06,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:06,224 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2020-07-17 13:30:06,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 13:30:06,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-07-17 13:30:06,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:06,226 INFO L225 Difference]: With dead ends: 160 [2020-07-17 13:30:06,226 INFO L226 Difference]: Without dead ends: 158 [2020-07-17 13:30:06,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:30:06,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-17 13:30:06,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-07-17 13:30:06,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-17 13:30:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2020-07-17 13:30:06,245 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 44 [2020-07-17 13:30:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:06,245 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2020-07-17 13:30:06,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 13:30:06,245 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2020-07-17 13:30:06,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-17 13:30:06,248 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:06,248 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, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:06,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 13:30:06,249 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:06,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:06,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1203451366, now seen corresponding path program 1 times [2020-07-17 13:30:06,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:06,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695432635] [2020-07-17 13:30:06,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:06,442 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:06,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695432635] [2020-07-17 13:30:06,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:06,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-17 13:30:06,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046306455] [2020-07-17 13:30:06,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 13:30:06,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:06,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 13:30:06,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-17 13:30:06,444 INFO L87 Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 11 states. [2020-07-17 13:30:07,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:07,317 INFO L93 Difference]: Finished difference Result 398 states and 427 transitions. [2020-07-17 13:30:07,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-17 13:30:07,317 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-07-17 13:30:07,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:07,319 INFO L225 Difference]: With dead ends: 398 [2020-07-17 13:30:07,319 INFO L226 Difference]: Without dead ends: 326 [2020-07-17 13:30:07,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-07-17 13:30:07,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-07-17 13:30:07,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 204. [2020-07-17 13:30:07,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-07-17 13:30:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 220 transitions. [2020-07-17 13:30:07,346 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 220 transitions. Word has length 48 [2020-07-17 13:30:07,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:07,347 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 220 transitions. [2020-07-17 13:30:07,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 13:30:07,347 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 220 transitions. [2020-07-17 13:30:07,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-17 13:30:07,348 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:07,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:07,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 13:30:07,349 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:07,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:07,349 INFO L82 PathProgramCache]: Analyzing trace with hash 2069783995, now seen corresponding path program 1 times [2020-07-17 13:30:07,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:07,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012937228] [2020-07-17 13:30:07,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:07,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:07,390 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:07,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012937228] [2020-07-17 13:30:07,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:07,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 13:30:07,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155780554] [2020-07-17 13:30:07,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 13:30:07,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:07,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 13:30:07,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:30:07,392 INFO L87 Difference]: Start difference. First operand 204 states and 220 transitions. Second operand 4 states. [2020-07-17 13:30:07,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:07,630 INFO L93 Difference]: Finished difference Result 211 states and 228 transitions. [2020-07-17 13:30:07,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 13:30:07,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-07-17 13:30:07,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:07,633 INFO L225 Difference]: With dead ends: 211 [2020-07-17 13:30:07,633 INFO L226 Difference]: Without dead ends: 206 [2020-07-17 13:30:07,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:30:07,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-07-17 13:30:07,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-07-17 13:30:07,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-07-17 13:30:07,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 222 transitions. [2020-07-17 13:30:07,659 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 222 transitions. Word has length 52 [2020-07-17 13:30:07,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:07,659 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 222 transitions. [2020-07-17 13:30:07,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 13:30:07,660 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 222 transitions. [2020-07-17 13:30:07,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-17 13:30:07,660 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:07,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:07,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 13:30:07,661 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:07,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:07,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1565892499, now seen corresponding path program 1 times [2020-07-17 13:30:07,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:07,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449219300] [2020-07-17 13:30:07,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:08,115 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:08,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449219300] [2020-07-17 13:30:08,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:08,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-17 13:30:08,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463310400] [2020-07-17 13:30:08,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-17 13:30:08,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:08,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-17 13:30:08,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-07-17 13:30:08,117 INFO L87 Difference]: Start difference. First operand 206 states and 222 transitions. Second operand 14 states. [2020-07-17 13:30:10,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:10,283 INFO L93 Difference]: Finished difference Result 636 states and 681 transitions. [2020-07-17 13:30:10,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-17 13:30:10,284 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-07-17 13:30:10,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:10,288 INFO L225 Difference]: With dead ends: 636 [2020-07-17 13:30:10,288 INFO L226 Difference]: Without dead ends: 633 [2020-07-17 13:30:10,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2020-07-17 13:30:10,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-07-17 13:30:10,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 225. [2020-07-17 13:30:10,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-07-17 13:30:10,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 243 transitions. [2020-07-17 13:30:10,328 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 243 transitions. Word has length 53 [2020-07-17 13:30:10,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:10,328 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 243 transitions. [2020-07-17 13:30:10,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-17 13:30:10,329 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 243 transitions. [2020-07-17 13:30:10,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-17 13:30:10,330 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:10,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:10,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 13:30:10,330 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:10,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:10,331 INFO L82 PathProgramCache]: Analyzing trace with hash 991929043, now seen corresponding path program 1 times [2020-07-17 13:30:10,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:10,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394161266] [2020-07-17 13:30:10,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:10,463 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:10,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394161266] [2020-07-17 13:30:10,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:10,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 13:30:10,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059827320] [2020-07-17 13:30:10,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 13:30:10,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:10,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 13:30:10,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-17 13:30:10,466 INFO L87 Difference]: Start difference. First operand 225 states and 243 transitions. Second operand 8 states. [2020-07-17 13:30:10,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:10,973 INFO L93 Difference]: Finished difference Result 321 states and 346 transitions. [2020-07-17 13:30:10,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 13:30:10,976 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-07-17 13:30:10,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:10,978 INFO L225 Difference]: With dead ends: 321 [2020-07-17 13:30:10,978 INFO L226 Difference]: Without dead ends: 291 [2020-07-17 13:30:10,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-07-17 13:30:10,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-07-17 13:30:11,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 275. [2020-07-17 13:30:11,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-07-17 13:30:11,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 301 transitions. [2020-07-17 13:30:11,037 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 301 transitions. Word has length 53 [2020-07-17 13:30:11,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:11,037 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 301 transitions. [2020-07-17 13:30:11,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 13:30:11,038 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 301 transitions. [2020-07-17 13:30:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-17 13:30:11,039 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:11,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:11,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 13:30:11,040 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:11,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:11,040 INFO L82 PathProgramCache]: Analyzing trace with hash -604385608, now seen corresponding path program 1 times [2020-07-17 13:30:11,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:11,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866533452] [2020-07-17 13:30:11,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:11,130 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:11,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866533452] [2020-07-17 13:30:11,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:11,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 13:30:11,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634283535] [2020-07-17 13:30:11,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 13:30:11,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:11,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 13:30:11,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-17 13:30:11,132 INFO L87 Difference]: Start difference. First operand 275 states and 301 transitions. Second operand 8 states. [2020-07-17 13:30:11,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:11,605 INFO L93 Difference]: Finished difference Result 298 states and 326 transitions. [2020-07-17 13:30:11,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 13:30:11,606 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-07-17 13:30:11,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:11,607 INFO L225 Difference]: With dead ends: 298 [2020-07-17 13:30:11,607 INFO L226 Difference]: Without dead ends: 293 [2020-07-17 13:30:11,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-07-17 13:30:11,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-07-17 13:30:11,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 268. [2020-07-17 13:30:11,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-07-17 13:30:11,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 293 transitions. [2020-07-17 13:30:11,657 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 293 transitions. Word has length 54 [2020-07-17 13:30:11,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:11,658 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 293 transitions. [2020-07-17 13:30:11,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 13:30:11,658 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 293 transitions. [2020-07-17 13:30:11,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-17 13:30:11,659 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:11,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:11,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-17 13:30:11,660 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:11,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:11,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1636675303, now seen corresponding path program 1 times [2020-07-17 13:30:11,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:11,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430867526] [2020-07-17 13:30:11,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:11,983 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:11,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430867526] [2020-07-17 13:30:11,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:11,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-17 13:30:11,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600223836] [2020-07-17 13:30:11,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-17 13:30:11,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:11,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-17 13:30:11,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-07-17 13:30:11,985 INFO L87 Difference]: Start difference. First operand 268 states and 293 transitions. Second operand 15 states. [2020-07-17 13:30:13,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:13,885 INFO L93 Difference]: Finished difference Result 722 states and 782 transitions. [2020-07-17 13:30:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-17 13:30:13,886 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-07-17 13:30:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:13,889 INFO L225 Difference]: With dead ends: 722 [2020-07-17 13:30:13,890 INFO L226 Difference]: Without dead ends: 719 [2020-07-17 13:30:13,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122 [2020-07-17 13:30:13,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2020-07-17 13:30:13,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 272. [2020-07-17 13:30:13,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-07-17 13:30:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 297 transitions. [2020-07-17 13:30:13,945 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 297 transitions. Word has length 57 [2020-07-17 13:30:13,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:13,945 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 297 transitions. [2020-07-17 13:30:13,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-17 13:30:13,946 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 297 transitions. [2020-07-17 13:30:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-17 13:30:13,946 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:13,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:13,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-17 13:30:13,947 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:13,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:13,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1939208096, now seen corresponding path program 1 times [2020-07-17 13:30:13,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:13,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906747233] [2020-07-17 13:30:13,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:14,018 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:14,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906747233] [2020-07-17 13:30:14,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:14,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 13:30:14,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370997832] [2020-07-17 13:30:14,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 13:30:14,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:14,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 13:30:14,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:30:14,020 INFO L87 Difference]: Start difference. First operand 272 states and 297 transitions. Second operand 4 states. [2020-07-17 13:30:14,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:14,311 INFO L93 Difference]: Finished difference Result 277 states and 302 transitions. [2020-07-17 13:30:14,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 13:30:14,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-07-17 13:30:14,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:14,314 INFO L225 Difference]: With dead ends: 277 [2020-07-17 13:30:14,314 INFO L226 Difference]: Without dead ends: 275 [2020-07-17 13:30:14,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:30:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-07-17 13:30:14,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 270. [2020-07-17 13:30:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-07-17 13:30:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 295 transitions. [2020-07-17 13:30:14,371 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 295 transitions. Word has length 58 [2020-07-17 13:30:14,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:14,371 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 295 transitions. [2020-07-17 13:30:14,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 13:30:14,371 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 295 transitions. [2020-07-17 13:30:14,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-17 13:30:14,372 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:14,372 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:14,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-17 13:30:14,373 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:14,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:14,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1792411396, now seen corresponding path program 1 times [2020-07-17 13:30:14,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:14,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469954786] [2020-07-17 13:30:14,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:14,504 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:14,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469954786] [2020-07-17 13:30:14,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:14,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 13:30:14,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051069767] [2020-07-17 13:30:14,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 13:30:14,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:14,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 13:30:14,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 13:30:14,506 INFO L87 Difference]: Start difference. First operand 270 states and 295 transitions. Second operand 7 states. [2020-07-17 13:30:15,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:15,227 INFO L93 Difference]: Finished difference Result 421 states and 458 transitions. [2020-07-17 13:30:15,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 13:30:15,228 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-07-17 13:30:15,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:15,230 INFO L225 Difference]: With dead ends: 421 [2020-07-17 13:30:15,230 INFO L226 Difference]: Without dead ends: 312 [2020-07-17 13:30:15,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-17 13:30:15,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-07-17 13:30:15,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 270. [2020-07-17 13:30:15,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-07-17 13:30:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 293 transitions. [2020-07-17 13:30:15,332 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 293 transitions. Word has length 59 [2020-07-17 13:30:15,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:15,333 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 293 transitions. [2020-07-17 13:30:15,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 13:30:15,333 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 293 transitions. [2020-07-17 13:30:15,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-17 13:30:15,335 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:15,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:15,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-17 13:30:15,336 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:15,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:15,337 INFO L82 PathProgramCache]: Analyzing trace with hash -984681049, now seen corresponding path program 1 times [2020-07-17 13:30:15,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:15,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684262377] [2020-07-17 13:30:15,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:15,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:15,682 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:15,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684262377] [2020-07-17 13:30:15,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:15,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-17 13:30:15,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217698578] [2020-07-17 13:30:15,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-17 13:30:15,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:15,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-17 13:30:15,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-07-17 13:30:15,686 INFO L87 Difference]: Start difference. First operand 270 states and 293 transitions. Second operand 16 states. [2020-07-17 13:30:17,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:17,348 INFO L93 Difference]: Finished difference Result 574 states and 610 transitions. [2020-07-17 13:30:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-17 13:30:17,348 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 62 [2020-07-17 13:30:17,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:17,355 INFO L225 Difference]: With dead ends: 574 [2020-07-17 13:30:17,355 INFO L226 Difference]: Without dead ends: 540 [2020-07-17 13:30:17,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2020-07-17 13:30:17,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-07-17 13:30:17,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 269. [2020-07-17 13:30:17,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-07-17 13:30:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 291 transitions. [2020-07-17 13:30:17,429 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 291 transitions. Word has length 62 [2020-07-17 13:30:17,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:17,429 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 291 transitions. [2020-07-17 13:30:17,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-17 13:30:17,429 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 291 transitions. [2020-07-17 13:30:17,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-17 13:30:17,430 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:17,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:17,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-17 13:30:17,431 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:17,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:17,432 INFO L82 PathProgramCache]: Analyzing trace with hash -649286859, now seen corresponding path program 1 times [2020-07-17 13:30:17,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:17,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773625512] [2020-07-17 13:30:17,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:17,488 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:17,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773625512] [2020-07-17 13:30:17,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:17,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 13:30:17,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153395466] [2020-07-17 13:30:17,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 13:30:17,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:17,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 13:30:17,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:30:17,498 INFO L87 Difference]: Start difference. First operand 269 states and 291 transitions. Second operand 4 states. [2020-07-17 13:30:17,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:17,873 INFO L93 Difference]: Finished difference Result 447 states and 493 transitions. [2020-07-17 13:30:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 13:30:17,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-07-17 13:30:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:17,876 INFO L225 Difference]: With dead ends: 447 [2020-07-17 13:30:17,876 INFO L226 Difference]: Without dead ends: 350 [2020-07-17 13:30:17,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:30:17,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-07-17 13:30:17,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 302. [2020-07-17 13:30:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-07-17 13:30:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 330 transitions. [2020-07-17 13:30:17,957 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 330 transitions. Word has length 64 [2020-07-17 13:30:17,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:17,957 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 330 transitions. [2020-07-17 13:30:17,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 13:30:17,957 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 330 transitions. [2020-07-17 13:30:17,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-07-17 13:30:17,959 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:17,959 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:17,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-17 13:30:17,960 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:17,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:17,960 INFO L82 PathProgramCache]: Analyzing trace with hash -201437452, now seen corresponding path program 1 times [2020-07-17 13:30:17,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:17,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734013737] [2020-07-17 13:30:17,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:17,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-17 13:30:17,971 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:458) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:290) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:191) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-17 13:30:17,977 INFO L168 Benchmark]: Toolchain (without parser) took 17835.29 ms. Allocated memory was 145.2 MB in the beginning and 426.2 MB in the end (delta: 281.0 MB). Free memory was 102.3 MB in the beginning and 321.8 MB in the end (delta: -219.5 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:17,978 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 13:30:17,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.77 ms. Allocated memory was 145.2 MB in the beginning and 203.9 MB in the end (delta: 58.7 MB). Free memory was 101.9 MB in the beginning and 170.3 MB in the end (delta: -68.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:17,985 INFO L168 Benchmark]: Boogie Preprocessor took 72.00 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 167.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:17,987 INFO L168 Benchmark]: RCFGBuilder took 829.94 ms. Allocated memory is still 203.9 MB. Free memory was 166.9 MB in the beginning and 104.4 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:17,987 INFO L168 Benchmark]: TraceAbstraction took 16291.02 ms. Allocated memory was 203.9 MB in the beginning and 426.2 MB in the end (delta: 222.3 MB). Free memory was 103.7 MB in the beginning and 321.8 MB in the end (delta: -218.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:17,992 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 635.77 ms. Allocated memory was 145.2 MB in the beginning and 203.9 MB in the end (delta: 58.7 MB). Free memory was 101.9 MB in the beginning and 170.3 MB in the end (delta: -68.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.00 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 167.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 829.94 ms. Allocated memory is still 203.9 MB. Free memory was 166.9 MB in the beginning and 104.4 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16291.02 ms. Allocated memory was 203.9 MB in the beginning and 426.2 MB in the end (delta: 222.3 MB). Free memory was 103.7 MB in the beginning and 321.8 MB in the end (delta: -218.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:458) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...