/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:36:17,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:36:17,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:36:17,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:36:17,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:36:17,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:36:17,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:36:17,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:36:17,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:36:17,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:36:17,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:36:17,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:36:17,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:36:17,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:36:17,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:36:17,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:36:17,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:36:17,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:36:17,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:36:17,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:36:17,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:36:17,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:36:17,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:36:17,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:36:17,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:36:17,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:36:17,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:36:17,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:36:17,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:36:17,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:36:17,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:36:17,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:36:17,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:36:17,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:36:17,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:36:17,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:36:17,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:36:17,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:36:17,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:36:17,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:36:17,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:36:17,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 03:36:17,826 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:36:17,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:36:17,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:36:17,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:36:17,828 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:36:17,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:36:17,828 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:36:17,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:36:17,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:36:17,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:36:17,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:36:17,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:36:17,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:36:17,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:36:17,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:36:17,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:36:17,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:36:17,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:36:17,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:36:17,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:36:17,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:36:17,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:36:17,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:36:17,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:36:17,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:36:17,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:36:17,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:36:17,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:36:17,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:36:17,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:36:18,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:36:18,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:36:18,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:36:18,157 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:36:18,157 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:36:18,158 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-19 03:36:18,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2774fd9db/bd950ea959f640e4813354b821190eff/FLAG146d38730 [2020-08-19 03:36:18,780 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:36:18,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-19 03:36:18,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2774fd9db/bd950ea959f640e4813354b821190eff/FLAG146d38730 [2020-08-19 03:36:19,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2774fd9db/bd950ea959f640e4813354b821190eff [2020-08-19 03:36:19,105 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:36:19,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:36:19,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:36:19,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:36:19,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:36:19,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:36:19" (1/1) ... [2020-08-19 03:36:19,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f1707e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:19, skipping insertion in model container [2020-08-19 03:36:19,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:36:19" (1/1) ... [2020-08-19 03:36:19,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:36:19,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:36:19,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:36:19,611 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:36:19,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:36:19,726 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:36:19,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:19 WrapperNode [2020-08-19 03:36:19,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:36:19,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:36:19,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:36:19,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:36:19,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:19" (1/1) ... [2020-08-19 03:36:19,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:19" (1/1) ... [2020-08-19 03:36:19,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:19" (1/1) ... [2020-08-19 03:36:19,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:19" (1/1) ... [2020-08-19 03:36:19,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:19" (1/1) ... [2020-08-19 03:36:19,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:19" (1/1) ... [2020-08-19 03:36:19,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:19" (1/1) ... [2020-08-19 03:36:19,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:36:19,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:36:19,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:36:19,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:36:19,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-19 03:36:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:36:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:36:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:36:19,875 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-19 03:36:19,875 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-19 03:36:19,875 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-19 03:36:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-19 03:36:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-19 03:36:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-19 03:36:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-19 03:36:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-19 03:36:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-19 03:36:19,877 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-19 03:36:19,877 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-19 03:36:19,877 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-19 03:36:19,877 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-19 03:36:19,877 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-19 03:36:19,877 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-19 03:36:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-19 03:36:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-19 03:36:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-19 03:36:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-19 03:36:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-19 03:36:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-19 03:36:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-19 03:36:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-19 03:36:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-19 03:36:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-19 03:36:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-19 03:36:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-19 03:36:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-19 03:36:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-19 03:36:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-19 03:36:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-19 03:36:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-19 03:36:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-19 03:36:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-19 03:36:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-19 03:36:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-19 03:36:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-19 03:36:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-19 03:36:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-19 03:36:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-19 03:36:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-19 03:36:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-19 03:36:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-19 03:36:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-19 03:36:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-19 03:36:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-19 03:36:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-19 03:36:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-19 03:36:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-19 03:36:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-19 03:36:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:36:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 03:36:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-19 03:36:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:36:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-19 03:36:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-19 03:36:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-19 03:36:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-19 03:36:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-19 03:36:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 03:36:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-19 03:36:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-19 03:36:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-19 03:36:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-19 03:36:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-19 03:36:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-19 03:36:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-19 03:36:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-19 03:36:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-19 03:36:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-19 03:36:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-19 03:36:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-19 03:36:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-19 03:36:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-19 03:36:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-19 03:36:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-19 03:36:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-19 03:36:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-19 03:36:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-19 03:36:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-19 03:36:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-19 03:36:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-19 03:36:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-19 03:36:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-19 03:36:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-19 03:36:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-19 03:36:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-19 03:36:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-19 03:36:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-19 03:36:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-19 03:36:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-19 03:36:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-19 03:36:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-19 03:36:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-19 03:36:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-19 03:36:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-19 03:36:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-19 03:36:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-19 03:36:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-19 03:36:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-19 03:36:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-19 03:36:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-19 03:36:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-19 03:36:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:36:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:36:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:36:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:36:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:36:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:36:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:36:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:36:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:36:20,602 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:36:20,603 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-19 03:36:20,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:36:20 BoogieIcfgContainer [2020-08-19 03:36:20,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:36:20,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:36:20,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:36:20,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:36:20,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:36:19" (1/3) ... [2020-08-19 03:36:20,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a4f3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:36:20, skipping insertion in model container [2020-08-19 03:36:20,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:19" (2/3) ... [2020-08-19 03:36:20,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a4f3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:36:20, skipping insertion in model container [2020-08-19 03:36:20,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:36:20" (3/3) ... [2020-08-19 03:36:20,615 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-08-19 03:36:20,625 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:36:20,633 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-19 03:36:20,650 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-19 03:36:20,677 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:36:20,678 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:36:20,678 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:36:20,678 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:36:20,678 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:36:20,679 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:36:20,679 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:36:20,679 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:36:20,703 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-08-19 03:36:20,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-19 03:36:20,709 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:20,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:20,711 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]=== [2020-08-19 03:36:20,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:20,718 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-08-19 03:36:20,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:20,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564349055] [2020-08-19 03:36:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:20,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:20,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564349055] [2020-08-19 03:36:20,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:20,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:36:20,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176295068] [2020-08-19 03:36:20,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:36:20,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:20,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:36:20,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:20,971 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-08-19 03:36:21,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:21,243 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-08-19 03:36:21,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:36:21,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-19 03:36:21,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:21,257 INFO L225 Difference]: With dead ends: 188 [2020-08-19 03:36:21,258 INFO L226 Difference]: Without dead ends: 100 [2020-08-19 03:36:21,262 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 [2020-08-19 03:36:21,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-19 03:36:21,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-08-19 03:36:21,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-19 03:36:21,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-19 03:36:21,311 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-08-19 03:36:21,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:21,312 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-19 03:36:21,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:36:21,312 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-19 03:36:21,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 03:36:21,313 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:21,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:21,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:36:21,314 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]=== [2020-08-19 03:36:21,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:21,314 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-08-19 03:36:21,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:21,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65490531] [2020-08-19 03:36:21,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:21,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:21,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:21,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65490531] [2020-08-19 03:36:21,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:21,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:36:21,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255491846] [2020-08-19 03:36:21,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:36:21,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:21,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:36:21,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:21,393 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-08-19 03:36:21,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:21,602 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-08-19 03:36:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:36:21,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-19 03:36:21,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:21,604 INFO L225 Difference]: With dead ends: 85 [2020-08-19 03:36:21,604 INFO L226 Difference]: Without dead ends: 83 [2020-08-19 03:36:21,605 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 [2020-08-19 03:36:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-19 03:36:21,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-19 03:36:21,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-19 03:36:21,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-08-19 03:36:21,628 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-08-19 03:36:21,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:21,629 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-08-19 03:36:21,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:36:21,631 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-08-19 03:36:21,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 03:36:21,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:21,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:21,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:36:21,632 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]=== [2020-08-19 03:36:21,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:21,633 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-08-19 03:36:21,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:21,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667337854] [2020-08-19 03:36:21,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:21,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:21,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667337854] [2020-08-19 03:36:21,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:21,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:36:21,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803990819] [2020-08-19 03:36:21,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:36:21,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:21,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:36:21,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:36:21,739 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-08-19 03:36:21,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:21,968 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-08-19 03:36:21,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 03:36:21,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-19 03:36:21,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:21,976 INFO L225 Difference]: With dead ends: 140 [2020-08-19 03:36:21,976 INFO L226 Difference]: Without dead ends: 138 [2020-08-19 03:36:21,977 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 [2020-08-19 03:36:21,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-19 03:36:21,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-08-19 03:36:21,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-19 03:36:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-19 03:36:21,988 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 14 [2020-08-19 03:36:21,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:21,988 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-19 03:36:21,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:36:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-19 03:36:21,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 03:36:21,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:21,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:21,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:36:21,990 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]=== [2020-08-19 03:36:21,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:21,991 INFO L82 PathProgramCache]: Analyzing trace with hash -646358176, now seen corresponding path program 1 times [2020-08-19 03:36:21,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:21,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708108457] [2020-08-19 03:36:21,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:22,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:22,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708108457] [2020-08-19 03:36:22,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:22,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:36:22,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718413651] [2020-08-19 03:36:22,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:36:22,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:22,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:36:22,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:36:22,072 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2020-08-19 03:36:22,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:22,262 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-08-19 03:36:22,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:36:22,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-19 03:36:22,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:22,264 INFO L225 Difference]: With dead ends: 85 [2020-08-19 03:36:22,265 INFO L226 Difference]: Without dead ends: 83 [2020-08-19 03:36:22,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:36:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-19 03:36:22,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-08-19 03:36:22,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-19 03:36:22,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-08-19 03:36:22,286 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-08-19 03:36:22,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:22,286 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-08-19 03:36:22,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:36:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-08-19 03:36:22,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 03:36:22,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:22,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:22,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:36:22,292 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]=== [2020-08-19 03:36:22,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:22,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-08-19 03:36:22,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:22,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994171677] [2020-08-19 03:36:22,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:22,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:22,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994171677] [2020-08-19 03:36:22,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:22,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:36:22,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273756420] [2020-08-19 03:36:22,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:36:22,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:22,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:36:22,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:22,426 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-08-19 03:36:22,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:22,569 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-08-19 03:36:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:36:22,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-19 03:36:22,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:22,571 INFO L225 Difference]: With dead ends: 83 [2020-08-19 03:36:22,571 INFO L226 Difference]: Without dead ends: 79 [2020-08-19 03:36:22,572 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 [2020-08-19 03:36:22,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-19 03:36:22,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-08-19 03:36:22,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 03:36:22,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-08-19 03:36:22,579 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-08-19 03:36:22,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:22,579 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-08-19 03:36:22,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:36:22,580 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-08-19 03:36:22,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 03:36:22,580 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:22,581 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] [2020-08-19 03:36:22,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:36:22,581 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]=== [2020-08-19 03:36:22,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:22,582 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-08-19 03:36:22,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:22,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431547390] [2020-08-19 03:36:22,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:22,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:22,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431547390] [2020-08-19 03:36:22,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:22,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:36:22,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136009845] [2020-08-19 03:36:22,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:36:22,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:22,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:36:22,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:36:22,661 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 6 states. [2020-08-19 03:36:22,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:22,856 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-08-19 03:36:22,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:36:22,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-19 03:36:22,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:22,858 INFO L225 Difference]: With dead ends: 136 [2020-08-19 03:36:22,858 INFO L226 Difference]: Without dead ends: 116 [2020-08-19 03:36:22,859 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 [2020-08-19 03:36:22,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-19 03:36:22,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-08-19 03:36:22,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-19 03:36:22,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-19 03:36:22,866 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-08-19 03:36:22,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:22,866 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-19 03:36:22,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:36:22,867 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-19 03:36:22,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 03:36:22,868 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:22,868 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] [2020-08-19 03:36:22,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:36:22,868 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]=== [2020-08-19 03:36:22,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:22,869 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-08-19 03:36:22,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:22,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995684591] [2020-08-19 03:36:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:22,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:22,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:22,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995684591] [2020-08-19 03:36:22,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:22,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:36:22,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569504819] [2020-08-19 03:36:22,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:36:22,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:22,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:36:22,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:22,925 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-08-19 03:36:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:23,043 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-08-19 03:36:23,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:36:23,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-19 03:36:23,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:23,047 INFO L225 Difference]: With dead ends: 141 [2020-08-19 03:36:23,047 INFO L226 Difference]: Without dead ends: 99 [2020-08-19 03:36:23,048 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 [2020-08-19 03:36:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-19 03:36:23,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-19 03:36:23,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-19 03:36:23,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-19 03:36:23,054 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 24 [2020-08-19 03:36:23,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:23,055 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-19 03:36:23,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:36:23,055 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-19 03:36:23,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 03:36:23,056 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:23,056 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] [2020-08-19 03:36:23,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:36:23,057 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]=== [2020-08-19 03:36:23,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:23,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-08-19 03:36:23,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:23,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887598962] [2020-08-19 03:36:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:23,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:23,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887598962] [2020-08-19 03:36:23,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:23,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:36:23,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438108886] [2020-08-19 03:36:23,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:36:23,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:23,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:36:23,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:23,130 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-19 03:36:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:23,261 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-08-19 03:36:23,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:36:23,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 03:36:23,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:23,263 INFO L225 Difference]: With dead ends: 78 [2020-08-19 03:36:23,264 INFO L226 Difference]: Without dead ends: 76 [2020-08-19 03:36:23,264 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 [2020-08-19 03:36:23,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-19 03:36:23,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-08-19 03:36:23,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 03:36:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-19 03:36:23,270 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 25 [2020-08-19 03:36:23,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:23,271 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-19 03:36:23,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:36:23,271 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-19 03:36:23,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 03:36:23,272 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:23,272 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] [2020-08-19 03:36:23,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:36:23,272 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]=== [2020-08-19 03:36:23,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:23,273 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-08-19 03:36:23,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:23,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358124307] [2020-08-19 03:36:23,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:23,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:23,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358124307] [2020-08-19 03:36:23,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:23,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:36:23,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134721195] [2020-08-19 03:36:23,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:36:23,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:23,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:36:23,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:36:23,321 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 5 states. [2020-08-19 03:36:23,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:23,548 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2020-08-19 03:36:23,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:36:23,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-19 03:36:23,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:23,549 INFO L225 Difference]: With dead ends: 194 [2020-08-19 03:36:23,549 INFO L226 Difference]: Without dead ends: 130 [2020-08-19 03:36:23,551 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 [2020-08-19 03:36:23,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-19 03:36:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2020-08-19 03:36:23,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-19 03:36:23,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-19 03:36:23,557 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 27 [2020-08-19 03:36:23,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:23,557 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-19 03:36:23,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:36:23,558 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-19 03:36:23,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 03:36:23,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:23,559 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] [2020-08-19 03:36:23,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:36:23,559 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]=== [2020-08-19 03:36:23,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:23,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-08-19 03:36:23,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:23,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253237415] [2020-08-19 03:36:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:23,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:23,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253237415] [2020-08-19 03:36:23,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:23,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:36:23,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995570263] [2020-08-19 03:36:23,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:36:23,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:23,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:36:23,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:36:23,616 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 5 states. [2020-08-19 03:36:23,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:23,738 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-08-19 03:36:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:36:23,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-19 03:36:23,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:23,739 INFO L225 Difference]: With dead ends: 79 [2020-08-19 03:36:23,739 INFO L226 Difference]: Without dead ends: 77 [2020-08-19 03:36:23,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:36:23,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-19 03:36:23,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-08-19 03:36:23,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 03:36:23,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-19 03:36:23,744 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 27 [2020-08-19 03:36:23,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:23,745 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-19 03:36:23,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:36:23,745 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-19 03:36:23,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 03:36:23,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:23,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:23,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:36:23,746 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]=== [2020-08-19 03:36:23,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:23,747 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-08-19 03:36:23,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:23,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825369921] [2020-08-19 03:36:23,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:23,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:23,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825369921] [2020-08-19 03:36:23,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:23,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:36:23,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732297820] [2020-08-19 03:36:23,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:36:23,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:23,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:36:23,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:36:23,810 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 6 states. [2020-08-19 03:36:24,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:24,097 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-08-19 03:36:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:36:24,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-19 03:36:24,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:24,099 INFO L225 Difference]: With dead ends: 182 [2020-08-19 03:36:24,099 INFO L226 Difference]: Without dead ends: 139 [2020-08-19 03:36:24,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:36:24,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-19 03:36:24,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-08-19 03:36:24,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-19 03:36:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-08-19 03:36:24,109 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 28 [2020-08-19 03:36:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:24,111 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-08-19 03:36:24,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:36:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-08-19 03:36:24,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 03:36:24,114 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:24,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:24,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:36:24,115 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]=== [2020-08-19 03:36:24,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:24,115 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-08-19 03:36:24,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:24,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675809089] [2020-08-19 03:36:24,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:24,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:24,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675809089] [2020-08-19 03:36:24,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:24,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:36:24,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907321649] [2020-08-19 03:36:24,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:36:24,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:24,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:36:24,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:36:24,350 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 8 states. [2020-08-19 03:36:25,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:25,099 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2020-08-19 03:36:25,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:36:25,100 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-08-19 03:36:25,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:25,103 INFO L225 Difference]: With dead ends: 237 [2020-08-19 03:36:25,103 INFO L226 Difference]: Without dead ends: 235 [2020-08-19 03:36:25,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:36:25,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-19 03:36:25,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 98. [2020-08-19 03:36:25,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-19 03:36:25,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-08-19 03:36:25,117 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 28 [2020-08-19 03:36:25,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:25,117 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-08-19 03:36:25,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:36:25,117 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-08-19 03:36:25,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 03:36:25,123 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:25,124 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] [2020-08-19 03:36:25,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 03:36:25,124 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]=== [2020-08-19 03:36:25,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:25,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1932526751, now seen corresponding path program 1 times [2020-08-19 03:36:25,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:25,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355149478] [2020-08-19 03:36:25,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:25,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 03:36:25,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355149478] [2020-08-19 03:36:25,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:25,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:36:25,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415116877] [2020-08-19 03:36:25,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:36:25,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:25,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:36:25,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:36:25,219 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 5 states. [2020-08-19 03:36:25,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:25,428 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-08-19 03:36:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 03:36:25,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-19 03:36:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:25,430 INFO L225 Difference]: With dead ends: 145 [2020-08-19 03:36:25,431 INFO L226 Difference]: Without dead ends: 127 [2020-08-19 03:36:25,432 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 [2020-08-19 03:36:25,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-19 03:36:25,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-08-19 03:36:25,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 03:36:25,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2020-08-19 03:36:25,439 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 30 [2020-08-19 03:36:25,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:25,440 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2020-08-19 03:36:25,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:36:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2020-08-19 03:36:25,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 03:36:25,444 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:25,444 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] [2020-08-19 03:36:25,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 03:36:25,444 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]=== [2020-08-19 03:36:25,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:25,445 INFO L82 PathProgramCache]: Analyzing trace with hash -250794977, now seen corresponding path program 1 times [2020-08-19 03:36:25,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:25,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809863432] [2020-08-19 03:36:25,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:25,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 03:36:25,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809863432] [2020-08-19 03:36:25,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:25,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:36:25,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392840272] [2020-08-19 03:36:25,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:36:25,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:25,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:36:25,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:25,494 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand 4 states. [2020-08-19 03:36:25,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:25,635 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-08-19 03:36:25,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:36:25,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-19 03:36:25,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:25,638 INFO L225 Difference]: With dead ends: 119 [2020-08-19 03:36:25,638 INFO L226 Difference]: Without dead ends: 117 [2020-08-19 03:36:25,639 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 [2020-08-19 03:36:25,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-19 03:36:25,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-19 03:36:25,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-19 03:36:25,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2020-08-19 03:36:25,648 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 30 [2020-08-19 03:36:25,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:25,648 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2020-08-19 03:36:25,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:36:25,648 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2020-08-19 03:36:25,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-19 03:36:25,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:25,649 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] [2020-08-19 03:36:25,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 03:36:25,650 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]=== [2020-08-19 03:36:25,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:25,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-08-19 03:36:25,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:25,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930118589] [2020-08-19 03:36:25,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:25,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:25,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930118589] [2020-08-19 03:36:25,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:25,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:36:25,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595196240] [2020-08-19 03:36:25,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:36:25,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:25,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:36:25,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:36:25,844 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand 8 states. [2020-08-19 03:36:26,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:26,471 INFO L93 Difference]: Finished difference Result 240 states and 275 transitions. [2020-08-19 03:36:26,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:36:26,472 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-19 03:36:26,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:26,473 INFO L225 Difference]: With dead ends: 240 [2020-08-19 03:36:26,474 INFO L226 Difference]: Without dead ends: 238 [2020-08-19 03:36:26,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:36:26,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-19 03:36:26,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 120. [2020-08-19 03:36:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 03:36:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-08-19 03:36:26,487 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 31 [2020-08-19 03:36:26,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:26,489 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-08-19 03:36:26,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:36:26,489 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-08-19 03:36:26,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 03:36:26,490 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:26,490 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:26,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 03:36:26,491 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]=== [2020-08-19 03:36:26,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:26,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-08-19 03:36:26,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:26,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184979823] [2020-08-19 03:36:26,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:26,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:26,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184979823] [2020-08-19 03:36:26,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:36:26,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 03:36:26,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227135084] [2020-08-19 03:36:26,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:36:26,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:26,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:36:26,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:36:26,577 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 6 states. [2020-08-19 03:36:26,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:26,846 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2020-08-19 03:36:26,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:36:26,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-19 03:36:26,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:26,848 INFO L225 Difference]: With dead ends: 207 [2020-08-19 03:36:26,848 INFO L226 Difference]: Without dead ends: 145 [2020-08-19 03:36:26,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:36:26,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-19 03:36:26,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2020-08-19 03:36:26,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-19 03:36:26,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-08-19 03:36:26,858 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 33 [2020-08-19 03:36:26,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:26,859 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-08-19 03:36:26,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:36:26,859 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-08-19 03:36:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 03:36:26,860 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:26,860 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] [2020-08-19 03:36:26,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 03:36:26,860 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]=== [2020-08-19 03:36:26,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:26,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-08-19 03:36:26,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:26,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683010770] [2020-08-19 03:36:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:26,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:26,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683010770] [2020-08-19 03:36:26,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:26,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 03:36:26,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388884466] [2020-08-19 03:36:26,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:36:26,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:26,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:36:26,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:36:26,945 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 7 states. [2020-08-19 03:36:27,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:27,305 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-08-19 03:36:27,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:36:27,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-19 03:36:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:27,307 INFO L225 Difference]: With dead ends: 198 [2020-08-19 03:36:27,307 INFO L226 Difference]: Without dead ends: 178 [2020-08-19 03:36:27,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:36:27,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-19 03:36:27,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-08-19 03:36:27,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-19 03:36:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-08-19 03:36:27,318 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 33 [2020-08-19 03:36:27,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:27,318 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-08-19 03:36:27,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:36:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-08-19 03:36:27,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 03:36:27,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:27,319 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] [2020-08-19 03:36:27,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 03:36:27,319 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]=== [2020-08-19 03:36:27,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:27,320 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-08-19 03:36:27,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:27,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341936454] [2020-08-19 03:36:27,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:27,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 03:36:27,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341936454] [2020-08-19 03:36:27,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:27,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:36:27,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922941872] [2020-08-19 03:36:27,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:36:27,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:27,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:36:27,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:36:27,390 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 6 states. [2020-08-19 03:36:27,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:27,602 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2020-08-19 03:36:27,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 03:36:27,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-19 03:36:27,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:27,608 INFO L225 Difference]: With dead ends: 182 [2020-08-19 03:36:27,608 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 03:36:27,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:36:27,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 03:36:27,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2020-08-19 03:36:27,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-19 03:36:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2020-08-19 03:36:27,618 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 33 [2020-08-19 03:36:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:27,619 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2020-08-19 03:36:27,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:36:27,619 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2020-08-19 03:36:27,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-19 03:36:27,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:27,620 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:27,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 03:36:27,620 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]=== [2020-08-19 03:36:27,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:27,621 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-08-19 03:36:27,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:27,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214787905] [2020-08-19 03:36:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:27,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:27,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:27,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214787905] [2020-08-19 03:36:27,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:36:27,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 03:36:27,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988530270] [2020-08-19 03:36:27,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:36:27,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:27,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:36:27,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:36:27,688 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand 7 states. [2020-08-19 03:36:27,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:27,993 INFO L93 Difference]: Finished difference Result 241 states and 276 transitions. [2020-08-19 03:36:27,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:36:27,994 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-19 03:36:27,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:27,996 INFO L225 Difference]: With dead ends: 241 [2020-08-19 03:36:27,996 INFO L226 Difference]: Without dead ends: 210 [2020-08-19 03:36:27,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:36:27,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-19 03:36:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 169. [2020-08-19 03:36:28,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-19 03:36:28,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-08-19 03:36:28,007 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 36 [2020-08-19 03:36:28,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:28,008 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-08-19 03:36:28,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:36:28,008 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-08-19 03:36:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-19 03:36:28,008 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:28,009 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] [2020-08-19 03:36:28,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 03:36:28,009 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]=== [2020-08-19 03:36:28,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:28,009 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-08-19 03:36:28,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:28,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024341305] [2020-08-19 03:36:28,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:28,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:28,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024341305] [2020-08-19 03:36:28,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:28,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:36:28,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521081542] [2020-08-19 03:36:28,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:36:28,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:28,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:36:28,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:28,067 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 4 states. [2020-08-19 03:36:28,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:28,223 INFO L93 Difference]: Finished difference Result 354 states and 437 transitions. [2020-08-19 03:36:28,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:36:28,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-08-19 03:36:28,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:28,226 INFO L225 Difference]: With dead ends: 354 [2020-08-19 03:36:28,226 INFO L226 Difference]: Without dead ends: 258 [2020-08-19 03:36:28,227 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 [2020-08-19 03:36:28,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-19 03:36:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-19 03:36:28,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-19 03:36:28,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 262 transitions. [2020-08-19 03:36:28,240 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 262 transitions. Word has length 36 [2020-08-19 03:36:28,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:28,240 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 262 transitions. [2020-08-19 03:36:28,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:36:28,241 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 262 transitions. [2020-08-19 03:36:28,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-19 03:36:28,241 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:28,242 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:28,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 03:36:28,242 INFO L427 AbstractCegarLoop]: === Iteration 21 === [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]=== [2020-08-19 03:36:28,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:28,243 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-08-19 03:36:28,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:28,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972356306] [2020-08-19 03:36:28,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:28,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:28,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972356306] [2020-08-19 03:36:28,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:36:28,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 03:36:28,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837940119] [2020-08-19 03:36:28,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:36:28,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:28,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:36:28,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:36:28,494 INFO L87 Difference]: Start difference. First operand 218 states and 262 transitions. Second operand 10 states. [2020-08-19 03:36:29,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:29,231 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2020-08-19 03:36:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 03:36:29,232 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-19 03:36:29,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:29,234 INFO L225 Difference]: With dead ends: 430 [2020-08-19 03:36:29,234 INFO L226 Difference]: Without dead ends: 338 [2020-08-19 03:36:29,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-08-19 03:36:29,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-19 03:36:29,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 235. [2020-08-19 03:36:29,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-19 03:36:29,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 282 transitions. [2020-08-19 03:36:29,250 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 282 transitions. Word has length 40 [2020-08-19 03:36:29,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:29,250 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 282 transitions. [2020-08-19 03:36:29,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:36:29,251 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 282 transitions. [2020-08-19 03:36:29,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-19 03:36:29,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:29,251 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:29,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 03:36:29,252 INFO L427 AbstractCegarLoop]: === Iteration 22 === [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]=== [2020-08-19 03:36:29,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:29,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-08-19 03:36:29,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:29,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231054498] [2020-08-19 03:36:29,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:29,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:29,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:29,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231054498] [2020-08-19 03:36:29,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:29,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:36:29,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68044681] [2020-08-19 03:36:29,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:36:29,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:29,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:36:29,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:36:29,327 INFO L87 Difference]: Start difference. First operand 235 states and 282 transitions. Second operand 6 states. [2020-08-19 03:36:29,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:29,525 INFO L93 Difference]: Finished difference Result 353 states and 426 transitions. [2020-08-19 03:36:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 03:36:29,529 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-08-19 03:36:29,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:29,530 INFO L225 Difference]: With dead ends: 353 [2020-08-19 03:36:29,531 INFO L226 Difference]: Without dead ends: 244 [2020-08-19 03:36:29,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:36:29,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-19 03:36:29,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2020-08-19 03:36:29,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-19 03:36:29,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2020-08-19 03:36:29,544 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 40 [2020-08-19 03:36:29,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:29,544 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2020-08-19 03:36:29,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:36:29,544 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2020-08-19 03:36:29,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-19 03:36:29,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:29,545 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:29,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-19 03:36:29,546 INFO L427 AbstractCegarLoop]: === Iteration 23 === [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]=== [2020-08-19 03:36:29,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:29,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-08-19 03:36:29,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:29,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233691014] [2020-08-19 03:36:29,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:29,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:29,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233691014] [2020-08-19 03:36:29,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:36:29,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 03:36:29,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190860494] [2020-08-19 03:36:29,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:36:29,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:29,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:36:29,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:36:29,772 INFO L87 Difference]: Start difference. First operand 237 states and 284 transitions. Second operand 10 states. [2020-08-19 03:36:30,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:30,444 INFO L93 Difference]: Finished difference Result 441 states and 526 transitions. [2020-08-19 03:36:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 03:36:30,444 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-19 03:36:30,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:30,446 INFO L225 Difference]: With dead ends: 441 [2020-08-19 03:36:30,446 INFO L226 Difference]: Without dead ends: 349 [2020-08-19 03:36:30,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:36:30,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-19 03:36:30,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 239. [2020-08-19 03:36:30,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-19 03:36:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2020-08-19 03:36:30,461 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 40 [2020-08-19 03:36:30,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:30,461 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2020-08-19 03:36:30,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:36:30,461 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2020-08-19 03:36:30,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-19 03:36:30,462 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:30,462 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] [2020-08-19 03:36:30,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-19 03:36:30,463 INFO L427 AbstractCegarLoop]: === Iteration 24 === [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]=== [2020-08-19 03:36:30,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:30,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-08-19 03:36:30,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:30,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205543081] [2020-08-19 03:36:30,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:36:30,479 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:36:30,479 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:36:30,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-19 03:36:30,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:36:30 BoogieIcfgContainer [2020-08-19 03:36:30,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:36:30,507 INFO L168 Benchmark]: Toolchain (without parser) took 11400.50 ms. Allocated memory was 138.4 MB in the beginning and 364.4 MB in the end (delta: 226.0 MB). Free memory was 100.2 MB in the beginning and 241.1 MB in the end (delta: -140.9 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. [2020-08-19 03:36:30,508 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 03:36:30,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 619.77 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 168.4 MB in the end (delta: -68.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:36:30,509 INFO L168 Benchmark]: Boogie Preprocessor took 78.95 ms. Allocated memory is still 201.9 MB. Free memory was 168.4 MB in the beginning and 164.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-08-19 03:36:30,510 INFO L168 Benchmark]: RCFGBuilder took 800.45 ms. Allocated memory is still 201.9 MB. Free memory was 164.9 MB in the beginning and 109.6 MB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2020-08-19 03:36:30,510 INFO L168 Benchmark]: TraceAbstraction took 9896.73 ms. Allocated memory was 201.9 MB in the beginning and 364.4 MB in the end (delta: 162.5 MB). Free memory was 108.9 MB in the beginning and 241.1 MB in the end (delta: -132.2 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2020-08-19 03:36:30,513 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 619.77 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 168.4 MB in the end (delta: -68.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.95 ms. Allocated memory is still 201.9 MB. Free memory was 168.4 MB in the beginning and 164.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 800.45 ms. Allocated memory is still 201.9 MB. Free memory was 164.9 MB in the beginning and 109.6 MB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9896.73 ms. Allocated memory was 201.9 MB in the beginning and 364.4 MB in the end (delta: 162.5 MB). Free memory was 108.9 MB in the beginning and 241.1 MB in the end (delta: -132.2 MB). Peak memory consumption was 30.3 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)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 89 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.8s, OverallIterations: 24, TraceHistogramMax: 2, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1788 SDtfs, 2214 SDslu, 3432 SDs, 0 SdLazy, 4020 SolverSat, 226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 892 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 157879 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 19 PerfectInterpolantSequences, 9/16 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...