/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:20:33,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:20:33,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:20:33,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:20:33,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:20:33,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:20:33,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:20:33,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:20:33,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:20:33,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:20:33,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:20:33,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:20:33,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:20:33,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:20:33,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:20:33,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:20:33,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:20:33,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:20:33,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:20:33,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:20:33,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:20:33,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:20:33,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:20:33,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:20:33,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 22:20:33,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 22:20:33,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 22:20:33,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 22:20:33,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 22:20:33,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 22:20:33,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 22:20:33,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 22:20:33,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 22:20:33,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 22:20:33,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 22:20:33,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 22:20:33,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 22:20:33,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 22:20:33,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:20:33,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:20:33,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:20:33,716 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:20:33,730 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:20:33,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:20:33,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:20:33,733 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:20:33,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:20:33,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:20:33,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:20:33,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:20:33,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:20:33,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:20:33,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:20:33,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:20:33,736 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:20:33,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:20:33,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:20:33,737 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:20:33,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:20:33,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:20:33,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:20:33,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:20:33,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:20:33,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:20:33,738 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 22:20:34,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:20:34,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:20:34,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:20:34,054 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:20:34,055 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:20:34,056 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-22 22:20:34,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c2e73db9/51907ef10dcd42c48775a1c3082d1915/FLAG6dab18d7e [2020-08-22 22:20:34,744 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:20:34,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-22 22:20:34,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c2e73db9/51907ef10dcd42c48775a1c3082d1915/FLAG6dab18d7e [2020-08-22 22:20:35,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c2e73db9/51907ef10dcd42c48775a1c3082d1915 [2020-08-22 22:20:35,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:20:35,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:20:35,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:20:35,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:20:35,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:20:35,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c7ca4c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35, skipping insertion in model container [2020-08-22 22:20:35,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:20:35,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:20:35,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:20:35,651 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:20:35,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:20:35,765 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:20:35,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35 WrapperNode [2020-08-22 22:20:35,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:20:35,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:20:35,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:20:35,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:20:35,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:20:35,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:20:35,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:20:35,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:20:35,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (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 [2020-08-22 22:20:35,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:20:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:20:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:20:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 22:20:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 22:20:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 22:20:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 22:20:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 22:20:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 22:20:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 22:20:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 22:20:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 22:20:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 22:20:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 22:20:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 22:20:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 22:20:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 22:20:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 22:20:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 22:20:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 22:20:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 22:20:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 22:20:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 22:20:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 22:20:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 22:20:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 22:20:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 22:20:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 22:20:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 22:20:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 22:20:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 22:20:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 22:20:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 22:20:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 22:20:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 22:20:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 22:20:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 22:20:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 22:20:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 22:20:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 22:20:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 22:20:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 22:20:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 22:20:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 22:20:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 22:20:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 22:20:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 22:20:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 22:20:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 22:20:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 22:20:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 22:20:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 22:20:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 22:20:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 22:20:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 22:20:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 22:20:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 22:20:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 22:20:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 22:20:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 22:20:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 22:20:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 22:20:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 22:20:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 22:20:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 22:20:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 22:20:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 22:20:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 22:20:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 22:20:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 22:20:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 22:20:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 22:20:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 22:20:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 22:20:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 22:20:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 22:20:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 22:20:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 22:20:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 22:20:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 22:20:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 22:20:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 22:20:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 22:20:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 22:20:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 22:20:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 22:20:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 22:20:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 22:20:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 22:20:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 22:20:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 22:20:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 22:20:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 22:20:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 22:20:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 22:20:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 22:20:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 22:20:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 22:20:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 22:20:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 22:20:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 22:20:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 22:20:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 22:20:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 22:20:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 22:20:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 22:20:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:20:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:20:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:20:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 22:20:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 22:20:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 22:20:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 22:20:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:20:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:20:36,761 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:20:36,762 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-22 22:20:36,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:20:36 BoogieIcfgContainer [2020-08-22 22:20:36,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:20:36,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:20:36,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:20:36,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:20:36,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:20:35" (1/3) ... [2020-08-22 22:20:36,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:20:36, skipping insertion in model container [2020-08-22 22:20:36,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (2/3) ... [2020-08-22 22:20:36,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:20:36, skipping insertion in model container [2020-08-22 22:20:36,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:20:36" (3/3) ... [2020-08-22 22:20:36,781 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-08-22 22:20:36,795 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:20:36,805 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-22 22:20:36,824 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-22 22:20:36,856 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:20:36,856 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:20:36,857 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:20:36,857 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:20:36,857 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:20:36,857 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:20:36,857 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:20:36,858 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:20:36,880 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-22 22:20:36,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-22 22:20:36,890 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:36,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:20:36,892 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]=== [2020-08-22 22:20:36,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:36,899 INFO L82 PathProgramCache]: Analyzing trace with hash 885652866, now seen corresponding path program 1 times [2020-08-22 22:20:36,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:36,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894237835] [2020-08-22 22:20:36,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:37,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:37,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894237835] [2020-08-22 22:20:37,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:37,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 22:20:37,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640677287] [2020-08-22 22:20:37,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:20:37,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:37,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:20:37,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:20:37,275 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-08-22 22:20:37,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:37,826 INFO L93 Difference]: Finished difference Result 360 states and 478 transitions. [2020-08-22 22:20:37,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 22:20:37,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-22 22:20:37,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:37,846 INFO L225 Difference]: With dead ends: 360 [2020-08-22 22:20:37,847 INFO L226 Difference]: Without dead ends: 194 [2020-08-22 22:20:37,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:20:37,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-08-22 22:20:37,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-08-22 22:20:37,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-08-22 22:20:37,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2020-08-22 22:20:37,936 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 12 [2020-08-22 22:20:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:37,937 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2020-08-22 22:20:37,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:20:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2020-08-22 22:20:37,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 22:20:37,938 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:37,939 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] [2020-08-22 22:20:37,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:20:37,940 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]=== [2020-08-22 22:20:37,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:37,940 INFO L82 PathProgramCache]: Analyzing trace with hash 684663316, now seen corresponding path program 1 times [2020-08-22 22:20:37,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:37,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112557061] [2020-08-22 22:20:37,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:38,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:38,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112557061] [2020-08-22 22:20:38,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:38,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:20:38,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459593366] [2020-08-22 22:20:38,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:20:38,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:38,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:20:38,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:38,025 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand 4 states. [2020-08-22 22:20:38,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:38,356 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2020-08-22 22:20:38,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:20:38,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-22 22:20:38,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:38,360 INFO L225 Difference]: With dead ends: 170 [2020-08-22 22:20:38,360 INFO L226 Difference]: Without dead ends: 165 [2020-08-22 22:20:38,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:38,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-22 22:20:38,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-08-22 22:20:38,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-08-22 22:20:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-08-22 22:20:38,389 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 24 [2020-08-22 22:20:38,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:38,390 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-08-22 22:20:38,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:20:38,390 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-08-22 22:20:38,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 22:20:38,392 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:38,392 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] [2020-08-22 22:20:38,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:20:38,393 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]=== [2020-08-22 22:20:38,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:38,393 INFO L82 PathProgramCache]: Analyzing trace with hash -265499727, now seen corresponding path program 1 times [2020-08-22 22:20:38,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:38,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912557812] [2020-08-22 22:20:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:38,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:38,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912557812] [2020-08-22 22:20:38,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:38,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 22:20:38,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570427193] [2020-08-22 22:20:38,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:20:38,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:38,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:20:38,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:20:38,551 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 8 states. [2020-08-22 22:20:39,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:39,236 INFO L93 Difference]: Finished difference Result 260 states and 277 transitions. [2020-08-22 22:20:39,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:20:39,237 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-08-22 22:20:39,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:39,239 INFO L225 Difference]: With dead ends: 260 [2020-08-22 22:20:39,243 INFO L226 Difference]: Without dead ends: 255 [2020-08-22 22:20:39,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-08-22 22:20:39,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-08-22 22:20:39,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 159. [2020-08-22 22:20:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-22 22:20:39,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2020-08-22 22:20:39,289 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 26 [2020-08-22 22:20:39,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:39,289 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2020-08-22 22:20:39,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:20:39,289 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2020-08-22 22:20:39,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-22 22:20:39,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:39,291 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] [2020-08-22 22:20:39,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:20:39,295 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]=== [2020-08-22 22:20:39,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:39,296 INFO L82 PathProgramCache]: Analyzing trace with hash 72562886, now seen corresponding path program 1 times [2020-08-22 22:20:39,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:39,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897623430] [2020-08-22 22:20:39,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:39,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:39,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897623430] [2020-08-22 22:20:39,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:39,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 22:20:39,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950975031] [2020-08-22 22:20:39,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 22:20:39,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:39,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 22:20:39,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:20:39,419 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand 6 states. [2020-08-22 22:20:39,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:39,849 INFO L93 Difference]: Finished difference Result 382 states and 407 transitions. [2020-08-22 22:20:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 22:20:39,850 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-08-22 22:20:39,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:39,852 INFO L225 Difference]: With dead ends: 382 [2020-08-22 22:20:39,852 INFO L226 Difference]: Without dead ends: 253 [2020-08-22 22:20:39,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:20:39,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-22 22:20:39,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 162. [2020-08-22 22:20:39,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-22 22:20:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2020-08-22 22:20:39,899 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 32 [2020-08-22 22:20:39,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:39,900 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions. [2020-08-22 22:20:39,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 22:20:39,900 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions. [2020-08-22 22:20:39,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 22:20:39,901 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:39,902 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] [2020-08-22 22:20:39,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:20:39,903 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]=== [2020-08-22 22:20:39,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:39,904 INFO L82 PathProgramCache]: Analyzing trace with hash 972027235, now seen corresponding path program 1 times [2020-08-22 22:20:39,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:39,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809588237] [2020-08-22 22:20:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:40,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:40,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:40,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809588237] [2020-08-22 22:20:40,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:40,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 22:20:40,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449133552] [2020-08-22 22:20:40,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:20:40,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:40,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:20:40,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:20:40,015 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand 7 states. [2020-08-22 22:20:40,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:40,425 INFO L93 Difference]: Finished difference Result 271 states and 288 transitions. [2020-08-22 22:20:40,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 22:20:40,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-08-22 22:20:40,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:40,428 INFO L225 Difference]: With dead ends: 271 [2020-08-22 22:20:40,428 INFO L226 Difference]: Without dead ends: 239 [2020-08-22 22:20:40,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:20:40,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-08-22 22:20:40,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 161. [2020-08-22 22:20:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-22 22:20:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2020-08-22 22:20:40,457 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 34 [2020-08-22 22:20:40,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:40,457 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2020-08-22 22:20:40,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:20:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2020-08-22 22:20:40,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 22:20:40,468 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:40,469 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] [2020-08-22 22:20:40,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:20:40,471 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]=== [2020-08-22 22:20:40,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:40,472 INFO L82 PathProgramCache]: Analyzing trace with hash -401575995, now seen corresponding path program 1 times [2020-08-22 22:20:40,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:40,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836807284] [2020-08-22 22:20:40,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:40,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:40,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836807284] [2020-08-22 22:20:40,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:40,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 22:20:40,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711010838] [2020-08-22 22:20:40,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:20:40,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:40,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:20:40,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:20:40,558 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand 7 states. [2020-08-22 22:20:41,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:41,157 INFO L93 Difference]: Finished difference Result 245 states and 261 transitions. [2020-08-22 22:20:41,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 22:20:41,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-08-22 22:20:41,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:41,160 INFO L225 Difference]: With dead ends: 245 [2020-08-22 22:20:41,160 INFO L226 Difference]: Without dead ends: 241 [2020-08-22 22:20:41,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-08-22 22:20:41,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-22 22:20:41,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 157. [2020-08-22 22:20:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-22 22:20:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2020-08-22 22:20:41,196 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 38 [2020-08-22 22:20:41,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:41,197 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2020-08-22 22:20:41,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:20:41,198 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2020-08-22 22:20:41,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 22:20:41,200 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:41,201 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] [2020-08-22 22:20:41,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:20:41,201 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]=== [2020-08-22 22:20:41,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:41,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1938604912, now seen corresponding path program 1 times [2020-08-22 22:20:41,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:41,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061844579] [2020-08-22 22:20:41,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:41,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:41,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061844579] [2020-08-22 22:20:41,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:41,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:20:41,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279766628] [2020-08-22 22:20:41,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:20:41,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:41,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:20:41,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:41,266 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand 4 states. [2020-08-22 22:20:41,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:41,568 INFO L93 Difference]: Finished difference Result 267 states and 287 transitions. [2020-08-22 22:20:41,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:20:41,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-08-22 22:20:41,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:41,572 INFO L225 Difference]: With dead ends: 267 [2020-08-22 22:20:41,573 INFO L226 Difference]: Without dead ends: 196 [2020-08-22 22:20:41,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:41,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-22 22:20:41,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 160. [2020-08-22 22:20:41,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-22 22:20:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2020-08-22 22:20:41,594 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 42 [2020-08-22 22:20:41,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:41,594 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2020-08-22 22:20:41,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:20:41,595 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2020-08-22 22:20:41,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-08-22 22:20:41,596 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:41,596 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] [2020-08-22 22:20:41,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 22:20:41,597 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]=== [2020-08-22 22:20:41,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:41,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1017153069, now seen corresponding path program 1 times [2020-08-22 22:20:41,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:41,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482559765] [2020-08-22 22:20:41,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:41,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:41,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:41,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482559765] [2020-08-22 22:20:41,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:41,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:20:41,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652564719] [2020-08-22 22:20:41,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:20:41,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:41,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:20:41,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:41,651 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand 4 states. [2020-08-22 22:20:41,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:41,952 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2020-08-22 22:20:41,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:20:41,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-08-22 22:20:41,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:41,954 INFO L225 Difference]: With dead ends: 160 [2020-08-22 22:20:41,954 INFO L226 Difference]: Without dead ends: 158 [2020-08-22 22:20:41,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:41,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-22 22:20:41,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-08-22 22:20:41,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-22 22:20:41,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2020-08-22 22:20:41,975 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 44 [2020-08-22 22:20:41,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:41,975 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2020-08-22 22:20:41,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:20:41,975 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2020-08-22 22:20:41,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-22 22:20:41,976 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:41,977 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] [2020-08-22 22:20:41,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 22:20:41,977 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]=== [2020-08-22 22:20:41,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:41,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1203451366, now seen corresponding path program 1 times [2020-08-22 22:20:41,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:41,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337279770] [2020-08-22 22:20:41,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:42,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:42,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337279770] [2020-08-22 22:20:42,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:42,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 22:20:42,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608671516] [2020-08-22 22:20:42,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 22:20:42,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:42,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 22:20:42,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:20:42,161 INFO L87 Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 11 states. [2020-08-22 22:20:43,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:43,199 INFO L93 Difference]: Finished difference Result 398 states and 427 transitions. [2020-08-22 22:20:43,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 22:20:43,199 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-08-22 22:20:43,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:43,201 INFO L225 Difference]: With dead ends: 398 [2020-08-22 22:20:43,201 INFO L226 Difference]: Without dead ends: 326 [2020-08-22 22:20:43,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-08-22 22:20:43,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-22 22:20:43,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 204. [2020-08-22 22:20:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-08-22 22:20:43,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 220 transitions. [2020-08-22 22:20:43,228 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 220 transitions. Word has length 48 [2020-08-22 22:20:43,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:43,231 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 220 transitions. [2020-08-22 22:20:43,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 22:20:43,231 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 220 transitions. [2020-08-22 22:20:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 22:20:43,232 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:43,233 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] [2020-08-22 22:20:43,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 22:20:43,233 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]=== [2020-08-22 22:20:43,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:43,234 INFO L82 PathProgramCache]: Analyzing trace with hash 2069783995, now seen corresponding path program 1 times [2020-08-22 22:20:43,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:43,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40460560] [2020-08-22 22:20:43,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:43,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:43,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40460560] [2020-08-22 22:20:43,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:43,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:20:43,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883034025] [2020-08-22 22:20:43,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:20:43,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:43,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:20:43,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:43,318 INFO L87 Difference]: Start difference. First operand 204 states and 220 transitions. Second operand 4 states. [2020-08-22 22:20:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:43,591 INFO L93 Difference]: Finished difference Result 211 states and 228 transitions. [2020-08-22 22:20:43,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:20:43,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-08-22 22:20:43,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:43,594 INFO L225 Difference]: With dead ends: 211 [2020-08-22 22:20:43,594 INFO L226 Difference]: Without dead ends: 206 [2020-08-22 22:20:43,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:43,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-22 22:20:43,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-22 22:20:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 22:20:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 222 transitions. [2020-08-22 22:20:43,619 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 222 transitions. Word has length 52 [2020-08-22 22:20:43,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:43,619 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 222 transitions. [2020-08-22 22:20:43,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:20:43,619 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 222 transitions. [2020-08-22 22:20:43,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 22:20:43,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:43,620 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] [2020-08-22 22:20:43,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 22:20:43,621 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]=== [2020-08-22 22:20:43,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:43,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1565892499, now seen corresponding path program 1 times [2020-08-22 22:20:43,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:43,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600148118] [2020-08-22 22:20:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:44,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:44,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600148118] [2020-08-22 22:20:44,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:44,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 22:20:44,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763986864] [2020-08-22 22:20:44,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 22:20:44,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:44,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 22:20:44,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:20:44,092 INFO L87 Difference]: Start difference. First operand 206 states and 222 transitions. Second operand 14 states. [2020-08-22 22:20:46,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:46,292 INFO L93 Difference]: Finished difference Result 636 states and 681 transitions. [2020-08-22 22:20:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 22:20:46,293 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-08-22 22:20:46,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:46,297 INFO L225 Difference]: With dead ends: 636 [2020-08-22 22:20:46,297 INFO L226 Difference]: Without dead ends: 633 [2020-08-22 22:20:46,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 22:20:46,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-08-22 22:20:46,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 225. [2020-08-22 22:20:46,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-08-22 22:20:46,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 243 transitions. [2020-08-22 22:20:46,332 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 243 transitions. Word has length 53 [2020-08-22 22:20:46,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:46,332 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 243 transitions. [2020-08-22 22:20:46,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 22:20:46,332 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 243 transitions. [2020-08-22 22:20:46,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 22:20:46,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:46,334 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] [2020-08-22 22:20:46,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 22:20:46,334 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]=== [2020-08-22 22:20:46,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:46,335 INFO L82 PathProgramCache]: Analyzing trace with hash 991929043, now seen corresponding path program 1 times [2020-08-22 22:20:46,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:46,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944238429] [2020-08-22 22:20:46,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:46,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 22:20:46,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944238429] [2020-08-22 22:20:46,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:46,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 22:20:46,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45604608] [2020-08-22 22:20:46,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:20:46,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:46,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:20:46,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:20:46,494 INFO L87 Difference]: Start difference. First operand 225 states and 243 transitions. Second operand 8 states. [2020-08-22 22:20:47,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:47,136 INFO L93 Difference]: Finished difference Result 321 states and 346 transitions. [2020-08-22 22:20:47,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 22:20:47,137 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-08-22 22:20:47,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:47,139 INFO L225 Difference]: With dead ends: 321 [2020-08-22 22:20:47,140 INFO L226 Difference]: Without dead ends: 291 [2020-08-22 22:20:47,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:20:47,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-08-22 22:20:47,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 275. [2020-08-22 22:20:47,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-08-22 22:20:47,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 301 transitions. [2020-08-22 22:20:47,204 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 301 transitions. Word has length 53 [2020-08-22 22:20:47,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:47,204 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 301 transitions. [2020-08-22 22:20:47,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:20:47,204 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 301 transitions. [2020-08-22 22:20:47,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 22:20:47,205 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:47,206 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] [2020-08-22 22:20:47,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 22:20:47,206 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]=== [2020-08-22 22:20:47,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:47,207 INFO L82 PathProgramCache]: Analyzing trace with hash -604385608, now seen corresponding path program 1 times [2020-08-22 22:20:47,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:47,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631985812] [2020-08-22 22:20:47,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:47,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:47,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631985812] [2020-08-22 22:20:47,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:47,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 22:20:47,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820007672] [2020-08-22 22:20:47,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:20:47,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:47,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:20:47,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:20:47,291 INFO L87 Difference]: Start difference. First operand 275 states and 301 transitions. Second operand 8 states. [2020-08-22 22:20:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:47,795 INFO L93 Difference]: Finished difference Result 294 states and 322 transitions. [2020-08-22 22:20:47,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:20:47,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-08-22 22:20:47,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:47,797 INFO L225 Difference]: With dead ends: 294 [2020-08-22 22:20:47,798 INFO L226 Difference]: Without dead ends: 289 [2020-08-22 22:20:47,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:20:47,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-08-22 22:20:47,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 268. [2020-08-22 22:20:47,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-22 22:20:47,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 293 transitions. [2020-08-22 22:20:47,837 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 293 transitions. Word has length 54 [2020-08-22 22:20:47,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:47,837 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 293 transitions. [2020-08-22 22:20:47,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:20:47,837 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 293 transitions. [2020-08-22 22:20:47,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 22:20:47,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:47,839 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] [2020-08-22 22:20:47,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 22:20:47,839 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]=== [2020-08-22 22:20:47,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:47,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1636675303, now seen corresponding path program 1 times [2020-08-22 22:20:47,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:47,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424709059] [2020-08-22 22:20:47,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:48,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:48,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:48,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424709059] [2020-08-22 22:20:48,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:48,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 22:20:48,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399928668] [2020-08-22 22:20:48,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 22:20:48,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:48,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 22:20:48,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-08-22 22:20:48,180 INFO L87 Difference]: Start difference. First operand 268 states and 293 transitions. Second operand 15 states. [2020-08-22 22:20:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:50,138 INFO L93 Difference]: Finished difference Result 722 states and 782 transitions. [2020-08-22 22:20:50,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 22:20:50,139 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-08-22 22:20:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:50,143 INFO L225 Difference]: With dead ends: 722 [2020-08-22 22:20:50,143 INFO L226 Difference]: Without dead ends: 719 [2020-08-22 22:20:50,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 22:20:50,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2020-08-22 22:20:50,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 272. [2020-08-22 22:20:50,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-22 22:20:50,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 297 transitions. [2020-08-22 22:20:50,201 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 297 transitions. Word has length 57 [2020-08-22 22:20:50,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:50,201 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 297 transitions. [2020-08-22 22:20:50,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 22:20:50,201 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 297 transitions. [2020-08-22 22:20:50,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 22:20:50,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:50,202 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] [2020-08-22 22:20:50,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 22:20:50,203 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]=== [2020-08-22 22:20:50,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:50,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1939208096, now seen corresponding path program 1 times [2020-08-22 22:20:50,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:50,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406441062] [2020-08-22 22:20:50,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:50,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:50,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 22:20:50,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406441062] [2020-08-22 22:20:50,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:50,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:20:50,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553696368] [2020-08-22 22:20:50,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:20:50,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:50,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:20:50,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:50,257 INFO L87 Difference]: Start difference. First operand 272 states and 297 transitions. Second operand 4 states. [2020-08-22 22:20:50,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:50,607 INFO L93 Difference]: Finished difference Result 277 states and 302 transitions. [2020-08-22 22:20:50,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:20:50,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-08-22 22:20:50,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:50,613 INFO L225 Difference]: With dead ends: 277 [2020-08-22 22:20:50,613 INFO L226 Difference]: Without dead ends: 275 [2020-08-22 22:20:50,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:50,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-08-22 22:20:50,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 270. [2020-08-22 22:20:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-08-22 22:20:50,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 295 transitions. [2020-08-22 22:20:50,658 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 295 transitions. Word has length 58 [2020-08-22 22:20:50,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:50,659 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 295 transitions. [2020-08-22 22:20:50,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:20:50,659 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 295 transitions. [2020-08-22 22:20:50,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 22:20:50,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:50,660 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] [2020-08-22 22:20:50,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 22:20:50,661 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]=== [2020-08-22 22:20:50,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:50,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1792411396, now seen corresponding path program 1 times [2020-08-22 22:20:50,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:50,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236628684] [2020-08-22 22:20:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:50,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:50,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:50,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236628684] [2020-08-22 22:20:50,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:20:50,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:20:50,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135935451] [2020-08-22 22:20:50,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:20:50,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:50,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:20:50,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:20:50,816 INFO L87 Difference]: Start difference. First operand 270 states and 295 transitions. Second operand 7 states. [2020-08-22 22:20:51,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:51,359 INFO L93 Difference]: Finished difference Result 421 states and 458 transitions. [2020-08-22 22:20:51,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 22:20:51,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-08-22 22:20:51,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:51,361 INFO L225 Difference]: With dead ends: 421 [2020-08-22 22:20:51,362 INFO L226 Difference]: Without dead ends: 312 [2020-08-22 22:20:51,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:20:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-08-22 22:20:51,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 270. [2020-08-22 22:20:51,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-08-22 22:20:51,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 293 transitions. [2020-08-22 22:20:51,415 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 293 transitions. Word has length 59 [2020-08-22 22:20:51,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:51,416 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 293 transitions. [2020-08-22 22:20:51,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:20:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 293 transitions. [2020-08-22 22:20:51,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 22:20:51,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:51,417 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] [2020-08-22 22:20:51,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 22:20:51,418 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]=== [2020-08-22 22:20:51,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:51,418 INFO L82 PathProgramCache]: Analyzing trace with hash -984681049, now seen corresponding path program 1 times [2020-08-22 22:20:51,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:51,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475514601] [2020-08-22 22:20:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:51,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:51,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:51,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475514601] [2020-08-22 22:20:51,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:51,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 22:20:51,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203310485] [2020-08-22 22:20:51,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 22:20:51,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:51,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 22:20:51,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-22 22:20:51,594 INFO L87 Difference]: Start difference. First operand 270 states and 293 transitions. Second operand 13 states. [2020-08-22 22:20:52,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:52,689 INFO L93 Difference]: Finished difference Result 564 states and 600 transitions. [2020-08-22 22:20:52,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 22:20:52,690 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-08-22 22:20:52,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:52,692 INFO L225 Difference]: With dead ends: 564 [2020-08-22 22:20:52,693 INFO L226 Difference]: Without dead ends: 508 [2020-08-22 22:20:52,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-08-22 22:20:52,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-08-22 22:20:52,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 279. [2020-08-22 22:20:52,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-08-22 22:20:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 301 transitions. [2020-08-22 22:20:52,759 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 301 transitions. Word has length 62 [2020-08-22 22:20:52,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:52,760 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 301 transitions. [2020-08-22 22:20:52,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 22:20:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 301 transitions. [2020-08-22 22:20:52,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 22:20:52,761 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:52,761 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] [2020-08-22 22:20:52,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 22:20:52,761 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]=== [2020-08-22 22:20:52,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:52,762 INFO L82 PathProgramCache]: Analyzing trace with hash -649286859, now seen corresponding path program 1 times [2020-08-22 22:20:52,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:52,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291639311] [2020-08-22 22:20:52,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:52,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:52,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:52,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291639311] [2020-08-22 22:20:52,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:52,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:20:52,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802107132] [2020-08-22 22:20:52,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:20:52,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:52,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:20:52,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:52,805 INFO L87 Difference]: Start difference. First operand 279 states and 301 transitions. Second operand 4 states. [2020-08-22 22:20:53,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:53,227 INFO L93 Difference]: Finished difference Result 457 states and 503 transitions. [2020-08-22 22:20:53,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:20:53,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-08-22 22:20:53,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:53,231 INFO L225 Difference]: With dead ends: 457 [2020-08-22 22:20:53,231 INFO L226 Difference]: Without dead ends: 360 [2020-08-22 22:20:53,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:53,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-22 22:20:53,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 312. [2020-08-22 22:20:53,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-22 22:20:53,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 340 transitions. [2020-08-22 22:20:53,349 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 340 transitions. Word has length 64 [2020-08-22 22:20:53,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:53,350 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 340 transitions. [2020-08-22 22:20:53,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:20:53,350 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 340 transitions. [2020-08-22 22:20:53,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 22:20:53,352 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:53,352 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] [2020-08-22 22:20:53,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 22:20:53,353 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]=== [2020-08-22 22:20:53,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:53,353 INFO L82 PathProgramCache]: Analyzing trace with hash -201437452, now seen corresponding path program 1 times [2020-08-22 22:20:53,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:53,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698393873] [2020-08-22 22:20:53,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:53,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:53,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698393873] [2020-08-22 22:20:53,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:20:53,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 22:20:53,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99685703] [2020-08-22 22:20:53,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 22:20:53,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:53,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 22:20:53,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:20:53,500 INFO L87 Difference]: Start difference. First operand 312 states and 340 transitions. Second operand 10 states. [2020-08-22 22:20:54,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:54,323 INFO L93 Difference]: Finished difference Result 499 states and 541 transitions. [2020-08-22 22:20:54,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 22:20:54,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-08-22 22:20:54,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:54,327 INFO L225 Difference]: With dead ends: 499 [2020-08-22 22:20:54,327 INFO L226 Difference]: Without dead ends: 439 [2020-08-22 22:20:54,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-08-22 22:20:54,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-22 22:20:54,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 343. [2020-08-22 22:20:54,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-22 22:20:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 382 transitions. [2020-08-22 22:20:54,467 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 382 transitions. Word has length 67 [2020-08-22 22:20:54,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:54,467 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 382 transitions. [2020-08-22 22:20:54,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 22:20:54,468 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 382 transitions. [2020-08-22 22:20:54,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-22 22:20:54,469 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:54,469 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, 1, 1, 1, 1, 1, 1] [2020-08-22 22:20:54,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 22:20:54,473 INFO L427 AbstractCegarLoop]: === Iteration 20 === [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]=== [2020-08-22 22:20:54,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:54,474 INFO L82 PathProgramCache]: Analyzing trace with hash 364568229, now seen corresponding path program 1 times [2020-08-22 22:20:54,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:54,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921861227] [2020-08-22 22:20:54,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:20:54,511 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:20:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:20:54,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:20:54,620 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 22:20:54,620 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 22:20:54,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 22:20:54,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:20:54 BoogieIcfgContainer [2020-08-22 22:20:54,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:20:54,776 INFO L168 Benchmark]: Toolchain (without parser) took 19742.01 ms. Allocated memory was 146.3 MB in the beginning and 436.7 MB in the end (delta: 290.5 MB). Free memory was 100.5 MB in the beginning and 178.6 MB in the end (delta: -78.1 MB). Peak memory consumption was 212.3 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:54,781 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 146.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 22:20:54,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.64 ms. Allocated memory was 146.3 MB in the beginning and 206.0 MB in the end (delta: 59.8 MB). Free memory was 100.3 MB in the beginning and 172.9 MB in the end (delta: -72.7 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:54,787 INFO L168 Benchmark]: Boogie Preprocessor took 77.83 ms. Allocated memory is still 206.0 MB. Free memory was 172.9 MB in the beginning and 169.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:54,788 INFO L168 Benchmark]: RCFGBuilder took 924.25 ms. Allocated memory is still 206.0 MB. Free memory was 168.9 MB in the beginning and 106.5 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:54,788 INFO L168 Benchmark]: TraceAbstraction took 18000.13 ms. Allocated memory was 206.0 MB in the beginning and 436.7 MB in the end (delta: 230.7 MB). Free memory was 105.8 MB in the beginning and 178.6 MB in the end (delta: -72.8 MB). Peak memory consumption was 157.9 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:54,798 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 146.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.64 ms. Allocated memory was 146.3 MB in the beginning and 206.0 MB in the end (delta: 59.8 MB). Free memory was 100.3 MB in the beginning and 172.9 MB in the end (delta: -72.7 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.83 ms. Allocated memory is still 206.0 MB. Free memory was 172.9 MB in the beginning and 169.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 924.25 ms. Allocated memory is still 206.0 MB. Free memory was 168.9 MB in the beginning and 106.5 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18000.13 ms. Allocated memory was 206.0 MB in the beginning and 436.7 MB in the end (delta: 230.7 MB). Free memory was 105.8 MB in the beginning and 178.6 MB in the end (delta: -72.8 MB). Peak memory consumption was 157.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L992] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L993] COND FALSE !(!(list != ((void*)0))) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L993] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L993] list->inner = malloc(sizeof(SLL)) VAL [list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L993] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L993] list->inner->next = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L993] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L993] list->inner->inner = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L993] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L998] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1008] end = ((void*)0) VAL [end={0:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1009] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1012] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1014] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1016] int len = 0; VAL [end={-1:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1017] EXPR end->inner VAL [end={-1:0}, end->inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1017] SLL* inner = end->inner; VAL [end={-1:0}, end->inner={-2:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1018] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1020] COND TRUE len == 0 VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1021] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1024] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1025] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1025] COND FALSE !(!(((void*)0) == inner->inner)) VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1026] EXPR inner->next VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1026] COND FALSE !(!(((void*)0) == inner->next)) VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1027] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1027] inner = inner->inner VAL [end={-1:0}, inner={0:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1028] COND TRUE len == 1 VAL [end={-1:0}, inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1029] EXPR inner->inner VAL [end={-1:0}, inner={0:0}, inner->inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1029] inner = inner->inner VAL [end={-1:0}, inner={10:3}, inner->inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1018] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1020] COND FALSE !(len == 0) VAL [end={-1:0}, inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1023] len = 2 VAL [end={-1:0}, inner={10:3}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1024] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={10:3}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1025] EXPR inner->inner VAL [end={-1:0}, inner={10:3}, inner->inner={11:12}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1025] COND TRUE !(((void*)0) == inner->inner) VAL [end={-1:0}, inner={10:3}, inner->inner={11:12}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1025] __VERIFIER_error() VAL [end={-1:0}, inner={10:3}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.7s, OverallIterations: 20, TraceHistogramMax: 2, AutomataDifference: 13.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3220 SDtfs, 6398 SDslu, 10440 SDs, 0 SdLazy, 7017 SolverSat, 241 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 270 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=343occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 19 MinimizatonAttempts, 1849 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 952 NumberOfCodeBlocks, 952 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 860 ConstructedInterpolants, 0 QuantifiedInterpolants, 314476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 17 PerfectInterpolantSequences, 13/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...