/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=DEEPEST -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 [2020-08-18 21:08:12,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:08:12,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:08:12,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:08:12,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:08:12,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:08:12,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:08:12,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:08:12,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:08:12,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:08:12,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:08:12,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:08:12,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:08:12,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:08:12,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:08:12,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:08:12,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:08:12,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:08:12,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:08:12,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:08:12,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:08:12,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:08:12,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:08:12,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:08:12,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:08:12,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:08:12,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:08:12,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:08:12,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:08:12,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:08:12,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:08:12,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:08:12,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:08:12,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:08:12,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:08:12,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:08:12,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:08:12,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:08:12,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:08:12,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:08:12,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:08:12,072 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 [2020-08-18 21:08:12,119 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:08:12,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:08:12,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:08:12,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:08:12,123 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:08:12,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:08:12,124 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:08:12,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:08:12,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:08:12,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:08:12,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:08:12,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:08:12,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:08:12,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:08:12,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:08:12,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:08:12,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:08:12,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:08:12,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:08:12,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:08:12,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:08:12,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:08:12,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:08:12,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:08:12,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:08:12,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:08:12,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:08:12,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:08:12,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:08:12,130 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=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 21:08:12,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:08:12,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:08:12,499 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:08:12,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:08:12,501 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:08:12,501 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-18 21:08:12,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bf53813d/c33af77a86434f31bd8c2b1b1d24cb92/FLAGad1c2d6b7 [2020-08-18 21:08:13,117 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:08:13,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-18 21:08:13,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bf53813d/c33af77a86434f31bd8c2b1b1d24cb92/FLAGad1c2d6b7 [2020-08-18 21:08:13,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bf53813d/c33af77a86434f31bd8c2b1b1d24cb92 [2020-08-18 21:08:13,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:08:13,395 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:08:13,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:08:13,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:08:13,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:08:13,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:08:13" (1/1) ... [2020-08-18 21:08:13,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b2ce9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:08:13, skipping insertion in model container [2020-08-18 21:08:13,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:08:13" (1/1) ... [2020-08-18 21:08:13,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:08:13,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:08:13,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:08:13,916 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:08:13,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:08:14,034 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:08:14,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:08:14 WrapperNode [2020-08-18 21:08:14,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:08:14,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:08:14,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:08:14,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:08:14,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:08:14" (1/1) ... [2020-08-18 21:08:14,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:08:14" (1/1) ... [2020-08-18 21:08:14,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:08:14" (1/1) ... [2020-08-18 21:08:14,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:08:14" (1/1) ... [2020-08-18 21:08:14,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:08:14" (1/1) ... [2020-08-18 21:08:14,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:08:14" (1/1) ... [2020-08-18 21:08:14,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:08:14" (1/1) ... [2020-08-18 21:08:14,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:08:14,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:08:14,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:08:14,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:08:14,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:08:14" (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 [2020-08-18 21:08:14,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:08:14,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:08:14,174 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:08:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 21:08:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 21:08:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 21:08:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 21:08:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 21:08:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 21:08:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 21:08:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 21:08:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 21:08:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 21:08:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 21:08:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 21:08:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 21:08:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 21:08:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 21:08:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 21:08:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 21:08:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 21:08:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 21:08:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 21:08:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 21:08:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 21:08:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 21:08:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 21:08:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 21:08:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 21:08:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 21:08:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 21:08:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 21:08:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 21:08:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 21:08:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 21:08:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 21:08:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 21:08:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 21:08:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 21:08:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 21:08:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 21:08:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 21:08:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 21:08:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 21:08:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 21:08:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 21:08:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 21:08:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 21:08:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 21:08:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 21:08:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 21:08:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 21:08:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 21:08:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:08:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 21:08:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 21:08:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:08:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 21:08:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 21:08:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 21:08:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 21:08:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 21:08:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 21:08:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 21:08:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 21:08:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 21:08:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 21:08:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 21:08:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 21:08:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 21:08:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 21:08:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 21:08:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 21:08:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 21:08:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 21:08:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 21:08:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 21:08:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 21:08:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 21:08:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 21:08:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 21:08:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 21:08:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 21:08:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 21:08:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 21:08:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 21:08:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 21:08:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 21:08:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 21:08:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 21:08:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 21:08:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 21:08:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 21:08:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 21:08:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 21:08:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 21:08:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 21:08:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 21:08:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 21:08:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 21:08:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 21:08:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 21:08:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 21:08:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 21:08:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 21:08:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 21:08:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:08:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:08:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:08:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:08:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:08:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:08:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:08:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:08:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:08:14,845 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:08:14,846 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-18 21:08:14,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:08:14 BoogieIcfgContainer [2020-08-18 21:08:14,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:08:14,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:08:14,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:08:14,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:08:14,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:08:13" (1/3) ... [2020-08-18 21:08:14,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a35f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:08:14, skipping insertion in model container [2020-08-18 21:08:14,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:08:14" (2/3) ... [2020-08-18 21:08:14,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a35f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:08:14, skipping insertion in model container [2020-08-18 21:08:14,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:08:14" (3/3) ... [2020-08-18 21:08:14,860 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-08-18 21:08:14,871 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:08:14,879 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-18 21:08:14,894 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-18 21:08:14,921 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:08:14,921 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:08:14,921 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:08:14,922 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:08:14,923 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:08:14,923 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:08:14,924 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:08:14,924 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:08:14,956 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-08-18 21:08:14,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-18 21:08:14,962 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:14,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:08:14,964 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]=== [2020-08-18 21:08:14,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:14,971 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-08-18 21:08:14,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:14,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836973455] [2020-08-18 21:08:14,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:15,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:15,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836973455] [2020-08-18 21:08:15,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:15,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:08:15,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333869766] [2020-08-18 21:08:15,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:08:15,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:15,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:08:15,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:08:15,231 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-08-18 21:08:15,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:15,504 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-08-18 21:08:15,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:08:15,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-18 21:08:15,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:15,517 INFO L225 Difference]: With dead ends: 188 [2020-08-18 21:08:15,518 INFO L226 Difference]: Without dead ends: 100 [2020-08-18 21:08:15,522 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 [2020-08-18 21:08:15,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-18 21:08:15,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-08-18 21:08:15,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-18 21:08:15,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-18 21:08:15,571 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-08-18 21:08:15,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:15,571 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-18 21:08:15,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:08:15,572 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-18 21:08:15,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 21:08:15,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:15,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:08:15,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:08:15,574 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]=== [2020-08-18 21:08:15,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:15,574 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-08-18 21:08:15,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:15,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6336467] [2020-08-18 21:08:15,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:15,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:15,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6336467] [2020-08-18 21:08:15,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:15,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:08:15,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693660312] [2020-08-18 21:08:15,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:08:15,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:15,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:08:15,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:08:15,638 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-08-18 21:08:15,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:15,811 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-08-18 21:08:15,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:08:15,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-18 21:08:15,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:15,813 INFO L225 Difference]: With dead ends: 85 [2020-08-18 21:08:15,814 INFO L226 Difference]: Without dead ends: 83 [2020-08-18 21:08:15,815 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 [2020-08-18 21:08:15,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-18 21:08:15,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-18 21:08:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-18 21:08:15,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-08-18 21:08:15,826 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-08-18 21:08:15,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:15,827 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-08-18 21:08:15,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:08:15,827 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-08-18 21:08:15,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 21:08:15,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:15,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:08:15,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:08:15,829 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]=== [2020-08-18 21:08:15,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:15,829 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-08-18 21:08:15,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:15,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707432078] [2020-08-18 21:08:15,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:15,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:15,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707432078] [2020-08-18 21:08:15,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:15,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:08:15,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586641787] [2020-08-18 21:08:15,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:08:15,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:15,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:08:15,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:08:15,924 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-08-18 21:08:16,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:16,158 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-08-18 21:08:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 21:08:16,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 21:08:16,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:16,161 INFO L225 Difference]: With dead ends: 140 [2020-08-18 21:08:16,161 INFO L226 Difference]: Without dead ends: 138 [2020-08-18 21:08:16,162 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 [2020-08-18 21:08:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-18 21:08:16,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-08-18 21:08:16,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-18 21:08:16,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-18 21:08:16,173 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 14 [2020-08-18 21:08:16,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:16,173 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-18 21:08:16,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:08:16,174 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-18 21:08:16,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 21:08:16,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:16,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:08:16,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:08:16,175 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]=== [2020-08-18 21:08:16,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:16,176 INFO L82 PathProgramCache]: Analyzing trace with hash -646358176, now seen corresponding path program 1 times [2020-08-18 21:08:16,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:16,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558266065] [2020-08-18 21:08:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:16,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:16,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558266065] [2020-08-18 21:08:16,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:16,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:08:16,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148412243] [2020-08-18 21:08:16,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:08:16,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:16,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:08:16,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:08:16,286 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2020-08-18 21:08:16,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:16,479 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-08-18 21:08:16,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:08:16,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 21:08:16,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:16,481 INFO L225 Difference]: With dead ends: 85 [2020-08-18 21:08:16,484 INFO L226 Difference]: Without dead ends: 83 [2020-08-18 21:08:16,485 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 [2020-08-18 21:08:16,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-18 21:08:16,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-08-18 21:08:16,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-18 21:08:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-08-18 21:08:16,500 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-08-18 21:08:16,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:16,504 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-08-18 21:08:16,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:08:16,504 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-08-18 21:08:16,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 21:08:16,505 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:16,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:08:16,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:08:16,506 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]=== [2020-08-18 21:08:16,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:16,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-08-18 21:08:16,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:16,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782335358] [2020-08-18 21:08:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:16,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:16,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782335358] [2020-08-18 21:08:16,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:16,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:08:16,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560367272] [2020-08-18 21:08:16,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:08:16,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:16,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:08:16,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:08:16,600 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-08-18 21:08:16,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:16,742 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-08-18 21:08:16,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:08:16,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 21:08:16,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:16,744 INFO L225 Difference]: With dead ends: 83 [2020-08-18 21:08:16,744 INFO L226 Difference]: Without dead ends: 79 [2020-08-18 21:08:16,744 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 [2020-08-18 21:08:16,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-18 21:08:16,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-08-18 21:08:16,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 21:08:16,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-08-18 21:08:16,752 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-08-18 21:08:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:16,752 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-08-18 21:08:16,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:08:16,752 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-08-18 21:08:16,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 21:08:16,753 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:16,753 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] [2020-08-18 21:08:16,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:08:16,754 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]=== [2020-08-18 21:08:16,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:16,754 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-08-18 21:08:16,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:16,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453700367] [2020-08-18 21:08:16,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:16,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:16,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453700367] [2020-08-18 21:08:16,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:16,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 21:08:16,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151647087] [2020-08-18 21:08:16,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:08:16,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:16,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:08:16,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:08:16,825 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 6 states. [2020-08-18 21:08:17,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:17,006 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-08-18 21:08:17,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:08:17,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-18 21:08:17,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:17,009 INFO L225 Difference]: With dead ends: 136 [2020-08-18 21:08:17,009 INFO L226 Difference]: Without dead ends: 116 [2020-08-18 21:08:17,010 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 [2020-08-18 21:08:17,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-18 21:08:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-08-18 21:08:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-18 21:08:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-18 21:08:17,025 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-08-18 21:08:17,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:17,026 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-18 21:08:17,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:08:17,026 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-18 21:08:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 21:08:17,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:17,031 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] [2020-08-18 21:08:17,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:08:17,031 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]=== [2020-08-18 21:08:17,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:17,032 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-08-18 21:08:17,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:17,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417903585] [2020-08-18 21:08:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:17,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:17,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:17,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417903585] [2020-08-18 21:08:17,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:17,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:08:17,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303738295] [2020-08-18 21:08:17,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:08:17,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:17,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:08:17,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:08:17,115 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-08-18 21:08:17,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:17,253 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-08-18 21:08:17,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:08:17,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-18 21:08:17,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:17,256 INFO L225 Difference]: With dead ends: 141 [2020-08-18 21:08:17,256 INFO L226 Difference]: Without dead ends: 99 [2020-08-18 21:08:17,259 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 [2020-08-18 21:08:17,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-18 21:08:17,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-18 21:08:17,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 21:08:17,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 21:08:17,275 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 24 [2020-08-18 21:08:17,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:17,275 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 21:08:17,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:08:17,276 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 21:08:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 21:08:17,277 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:17,277 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] [2020-08-18 21:08:17,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:08:17,277 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]=== [2020-08-18 21:08:17,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:17,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-08-18 21:08:17,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:17,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692529244] [2020-08-18 21:08:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:17,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:17,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692529244] [2020-08-18 21:08:17,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:17,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:08:17,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112882599] [2020-08-18 21:08:17,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:08:17,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:17,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:08:17,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:08:17,339 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-18 21:08:17,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:17,484 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-08-18 21:08:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:08:17,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 21:08:17,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:17,486 INFO L225 Difference]: With dead ends: 78 [2020-08-18 21:08:17,486 INFO L226 Difference]: Without dead ends: 76 [2020-08-18 21:08:17,486 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 [2020-08-18 21:08:17,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-18 21:08:17,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-08-18 21:08:17,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 21:08:17,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-18 21:08:17,495 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 25 [2020-08-18 21:08:17,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:17,498 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-18 21:08:17,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:08:17,498 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-18 21:08:17,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 21:08:17,499 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:17,500 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] [2020-08-18 21:08:17,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:08:17,500 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]=== [2020-08-18 21:08:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:17,500 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-08-18 21:08:17,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:17,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974443262] [2020-08-18 21:08:17,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:17,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:17,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974443262] [2020-08-18 21:08:17,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:17,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:08:17,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74490499] [2020-08-18 21:08:17,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:08:17,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:17,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:08:17,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:08:17,548 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 5 states. [2020-08-18 21:08:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:17,786 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2020-08-18 21:08:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:08:17,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 21:08:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:17,788 INFO L225 Difference]: With dead ends: 194 [2020-08-18 21:08:17,788 INFO L226 Difference]: Without dead ends: 130 [2020-08-18 21:08:17,789 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 [2020-08-18 21:08:17,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-18 21:08:17,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2020-08-18 21:08:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 21:08:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 21:08:17,802 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 27 [2020-08-18 21:08:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:17,802 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 21:08:17,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:08:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 21:08:17,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 21:08:17,803 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:17,804 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] [2020-08-18 21:08:17,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:08:17,806 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]=== [2020-08-18 21:08:17,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:17,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-08-18 21:08:17,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:17,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274003513] [2020-08-18 21:08:17,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:17,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:17,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274003513] [2020-08-18 21:08:17,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:17,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:08:17,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803314840] [2020-08-18 21:08:17,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:08:17,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:17,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:08:17,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:08:17,882 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 5 states. [2020-08-18 21:08:18,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:18,022 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-08-18 21:08:18,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:08:18,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 21:08:18,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:18,024 INFO L225 Difference]: With dead ends: 79 [2020-08-18 21:08:18,024 INFO L226 Difference]: Without dead ends: 77 [2020-08-18 21:08:18,025 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 [2020-08-18 21:08:18,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-18 21:08:18,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-08-18 21:08:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 21:08:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-18 21:08:18,031 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 27 [2020-08-18 21:08:18,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:18,031 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-18 21:08:18,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:08:18,032 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-18 21:08:18,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 21:08:18,033 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:18,033 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] [2020-08-18 21:08:18,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:08:18,033 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]=== [2020-08-18 21:08:18,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:18,034 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-08-18 21:08:18,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:18,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174442565] [2020-08-18 21:08:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:18,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:18,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174442565] [2020-08-18 21:08:18,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:18,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 21:08:18,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396464149] [2020-08-18 21:08:18,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:08:18,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:18,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:08:18,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:08:18,099 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 6 states. [2020-08-18 21:08:18,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:18,406 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-08-18 21:08:18,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 21:08:18,406 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-18 21:08:18,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:18,408 INFO L225 Difference]: With dead ends: 182 [2020-08-18 21:08:18,408 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 21:08:18,409 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 [2020-08-18 21:08:18,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 21:08:18,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-08-18 21:08:18,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-18 21:08:18,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-08-18 21:08:18,414 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 28 [2020-08-18 21:08:18,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:18,415 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-08-18 21:08:18,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:08:18,415 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-08-18 21:08:18,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 21:08:18,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:18,416 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] [2020-08-18 21:08:18,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 21:08:18,416 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]=== [2020-08-18 21:08:18,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:18,417 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-08-18 21:08:18,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:18,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068879144] [2020-08-18 21:08:18,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:18,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:18,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068879144] [2020-08-18 21:08:18,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:18,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:08:18,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496751600] [2020-08-18 21:08:18,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:08:18,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:18,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:08:18,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:08:18,646 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 8 states. [2020-08-18 21:08:19,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:19,349 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2020-08-18 21:08:19,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:08:19,350 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-08-18 21:08:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:19,357 INFO L225 Difference]: With dead ends: 237 [2020-08-18 21:08:19,357 INFO L226 Difference]: Without dead ends: 235 [2020-08-18 21:08:19,358 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 [2020-08-18 21:08:19,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-18 21:08:19,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 98. [2020-08-18 21:08:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-18 21:08:19,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-08-18 21:08:19,371 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 28 [2020-08-18 21:08:19,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:19,371 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-08-18 21:08:19,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:08:19,371 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-08-18 21:08:19,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 21:08:19,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:19,375 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] [2020-08-18 21:08:19,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 21:08:19,376 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]=== [2020-08-18 21:08:19,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:19,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1932526751, now seen corresponding path program 1 times [2020-08-18 21:08:19,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:19,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152215065] [2020-08-18 21:08:19,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:19,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 21:08:19,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152215065] [2020-08-18 21:08:19,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:19,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:08:19,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109491483] [2020-08-18 21:08:19,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:08:19,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:19,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:08:19,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:08:19,480 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 5 states. [2020-08-18 21:08:19,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:19,730 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-08-18 21:08:19,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 21:08:19,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-18 21:08:19,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:19,732 INFO L225 Difference]: With dead ends: 145 [2020-08-18 21:08:19,733 INFO L226 Difference]: Without dead ends: 127 [2020-08-18 21:08:19,733 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 [2020-08-18 21:08:19,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-18 21:08:19,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-08-18 21:08:19,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 21:08:19,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2020-08-18 21:08:19,742 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 30 [2020-08-18 21:08:19,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:19,742 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2020-08-18 21:08:19,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:08:19,743 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2020-08-18 21:08:19,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 21:08:19,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:19,747 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] [2020-08-18 21:08:19,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 21:08:19,747 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]=== [2020-08-18 21:08:19,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:19,747 INFO L82 PathProgramCache]: Analyzing trace with hash -250794977, now seen corresponding path program 1 times [2020-08-18 21:08:19,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:19,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482621295] [2020-08-18 21:08:19,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:19,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 21:08:19,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482621295] [2020-08-18 21:08:19,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:19,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:08:19,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064019254] [2020-08-18 21:08:19,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:08:19,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:19,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:08:19,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:08:19,804 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand 4 states. [2020-08-18 21:08:19,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:19,961 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-08-18 21:08:19,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:08:19,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-18 21:08:19,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:19,962 INFO L225 Difference]: With dead ends: 119 [2020-08-18 21:08:19,962 INFO L226 Difference]: Without dead ends: 117 [2020-08-18 21:08:19,963 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 [2020-08-18 21:08:19,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-18 21:08:19,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-18 21:08:19,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-18 21:08:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2020-08-18 21:08:19,970 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 30 [2020-08-18 21:08:19,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:19,971 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2020-08-18 21:08:19,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:08:19,971 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2020-08-18 21:08:19,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-18 21:08:19,972 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:19,972 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] [2020-08-18 21:08:19,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 21:08:19,972 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]=== [2020-08-18 21:08:19,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:19,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-08-18 21:08:19,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:19,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632526009] [2020-08-18 21:08:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:20,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:20,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632526009] [2020-08-18 21:08:20,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:20,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:08:20,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123323127] [2020-08-18 21:08:20,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:08:20,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:20,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:08:20,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:08:20,148 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand 8 states. [2020-08-18 21:08:20,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:20,744 INFO L93 Difference]: Finished difference Result 240 states and 275 transitions. [2020-08-18 21:08:20,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:08:20,745 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-18 21:08:20,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:20,746 INFO L225 Difference]: With dead ends: 240 [2020-08-18 21:08:20,747 INFO L226 Difference]: Without dead ends: 238 [2020-08-18 21:08:20,747 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 [2020-08-18 21:08:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-18 21:08:20,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 120. [2020-08-18 21:08:20,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 21:08:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-08-18 21:08:20,756 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 31 [2020-08-18 21:08:20,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:20,757 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-08-18 21:08:20,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:08:20,757 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-08-18 21:08:20,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 21:08:20,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:20,758 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] [2020-08-18 21:08:20,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 21:08:20,758 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]=== [2020-08-18 21:08:20,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:20,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-08-18 21:08:20,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:20,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126104260] [2020-08-18 21:08:20,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:20,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:20,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126104260] [2020-08-18 21:08:20,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:08:20,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 21:08:20,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629195827] [2020-08-18 21:08:20,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:08:20,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:20,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:08:20,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:08:20,846 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 6 states. [2020-08-18 21:08:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:21,115 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2020-08-18 21:08:21,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 21:08:21,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 21:08:21,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:21,117 INFO L225 Difference]: With dead ends: 207 [2020-08-18 21:08:21,117 INFO L226 Difference]: Without dead ends: 145 [2020-08-18 21:08:21,118 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 [2020-08-18 21:08:21,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-18 21:08:21,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2020-08-18 21:08:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-18 21:08:21,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-08-18 21:08:21,126 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 33 [2020-08-18 21:08:21,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:21,126 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-08-18 21:08:21,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:08:21,127 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-08-18 21:08:21,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 21:08:21,127 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:21,127 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] [2020-08-18 21:08:21,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 21:08:21,128 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]=== [2020-08-18 21:08:21,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:21,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-08-18 21:08:21,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:21,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061775371] [2020-08-18 21:08:21,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:21,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:21,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061775371] [2020-08-18 21:08:21,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:21,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 21:08:21,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709633385] [2020-08-18 21:08:21,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:08:21,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:21,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:08:21,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:08:21,205 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 7 states. [2020-08-18 21:08:21,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:21,475 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-08-18 21:08:21,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 21:08:21,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-18 21:08:21,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:21,477 INFO L225 Difference]: With dead ends: 198 [2020-08-18 21:08:21,477 INFO L226 Difference]: Without dead ends: 178 [2020-08-18 21:08:21,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:08:21,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-18 21:08:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-08-18 21:08:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 21:08:21,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-08-18 21:08:21,486 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 33 [2020-08-18 21:08:21,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:21,486 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-08-18 21:08:21,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:08:21,487 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-08-18 21:08:21,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 21:08:21,487 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:21,487 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] [2020-08-18 21:08:21,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 21:08:21,488 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]=== [2020-08-18 21:08:21,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:21,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-08-18 21:08:21,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:21,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174890713] [2020-08-18 21:08:21,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:21,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:21,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 21:08:21,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174890713] [2020-08-18 21:08:21,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:21,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 21:08:21,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462589402] [2020-08-18 21:08:21,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:08:21,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:21,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:08:21,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:08:21,552 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 6 states. [2020-08-18 21:08:21,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:21,781 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2020-08-18 21:08:21,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 21:08:21,788 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 21:08:21,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:21,789 INFO L225 Difference]: With dead ends: 182 [2020-08-18 21:08:21,789 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 21:08:21,790 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 [2020-08-18 21:08:21,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 21:08:21,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2020-08-18 21:08:21,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-18 21:08:21,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2020-08-18 21:08:21,799 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 33 [2020-08-18 21:08:21,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:21,800 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2020-08-18 21:08:21,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:08:21,800 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2020-08-18 21:08:21,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 21:08:21,801 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:21,801 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] [2020-08-18 21:08:21,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 21:08:21,801 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]=== [2020-08-18 21:08:21,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:21,802 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-08-18 21:08:21,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:21,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994344856] [2020-08-18 21:08:21,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:21,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:21,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994344856] [2020-08-18 21:08:21,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:08:21,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 21:08:21,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902588125] [2020-08-18 21:08:21,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:08:21,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:21,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:08:21,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:08:21,868 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand 7 states. [2020-08-18 21:08:22,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:22,207 INFO L93 Difference]: Finished difference Result 241 states and 276 transitions. [2020-08-18 21:08:22,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 21:08:22,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-18 21:08:22,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:22,210 INFO L225 Difference]: With dead ends: 241 [2020-08-18 21:08:22,210 INFO L226 Difference]: Without dead ends: 210 [2020-08-18 21:08:22,210 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 [2020-08-18 21:08:22,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-18 21:08:22,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 169. [2020-08-18 21:08:22,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-18 21:08:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-08-18 21:08:22,222 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 36 [2020-08-18 21:08:22,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:22,222 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-08-18 21:08:22,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:08:22,222 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-08-18 21:08:22,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 21:08:22,223 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:22,223 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] [2020-08-18 21:08:22,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-18 21:08:22,223 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]=== [2020-08-18 21:08:22,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:22,224 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-08-18 21:08:22,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:22,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683016693] [2020-08-18 21:08:22,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:22,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:22,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683016693] [2020-08-18 21:08:22,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:22,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:08:22,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214693733] [2020-08-18 21:08:22,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:08:22,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:22,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:08:22,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:08:22,269 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 4 states. [2020-08-18 21:08:22,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:22,436 INFO L93 Difference]: Finished difference Result 354 states and 437 transitions. [2020-08-18 21:08:22,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:08:22,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-08-18 21:08:22,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:22,438 INFO L225 Difference]: With dead ends: 354 [2020-08-18 21:08:22,439 INFO L226 Difference]: Without dead ends: 258 [2020-08-18 21:08:22,439 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 [2020-08-18 21:08:22,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-18 21:08:22,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-18 21:08:22,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-18 21:08:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 262 transitions. [2020-08-18 21:08:22,455 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 262 transitions. Word has length 36 [2020-08-18 21:08:22,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:22,455 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 262 transitions. [2020-08-18 21:08:22,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:08:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 262 transitions. [2020-08-18 21:08:22,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 21:08:22,456 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:22,456 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] [2020-08-18 21:08:22,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-18 21:08:22,457 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]=== [2020-08-18 21:08:22,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:22,458 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-08-18 21:08:22,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:22,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018088901] [2020-08-18 21:08:22,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:22,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:22,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018088901] [2020-08-18 21:08:22,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:08:22,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 21:08:22,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170539024] [2020-08-18 21:08:22,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:08:22,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:22,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:08:22,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:08:22,747 INFO L87 Difference]: Start difference. First operand 218 states and 262 transitions. Second operand 10 states. [2020-08-18 21:08:23,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:23,498 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2020-08-18 21:08:23,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 21:08:23,498 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-18 21:08:23,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:23,501 INFO L225 Difference]: With dead ends: 430 [2020-08-18 21:08:23,501 INFO L226 Difference]: Without dead ends: 338 [2020-08-18 21:08:23,502 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 [2020-08-18 21:08:23,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-18 21:08:23,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 235. [2020-08-18 21:08:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-18 21:08:23,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 282 transitions. [2020-08-18 21:08:23,515 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 282 transitions. Word has length 40 [2020-08-18 21:08:23,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:23,516 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 282 transitions. [2020-08-18 21:08:23,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:08:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 282 transitions. [2020-08-18 21:08:23,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 21:08:23,517 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:23,517 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] [2020-08-18 21:08:23,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-18 21:08:23,517 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]=== [2020-08-18 21:08:23,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:23,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-08-18 21:08:23,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:23,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317303963] [2020-08-18 21:08:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:23,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:23,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:23,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317303963] [2020-08-18 21:08:23,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:08:23,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 21:08:23,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253176952] [2020-08-18 21:08:23,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:08:23,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:23,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:08:23,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:08:23,571 INFO L87 Difference]: Start difference. First operand 235 states and 282 transitions. Second operand 6 states. [2020-08-18 21:08:23,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:23,802 INFO L93 Difference]: Finished difference Result 353 states and 426 transitions. [2020-08-18 21:08:23,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 21:08:23,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-08-18 21:08:23,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:23,807 INFO L225 Difference]: With dead ends: 353 [2020-08-18 21:08:23,807 INFO L226 Difference]: Without dead ends: 244 [2020-08-18 21:08:23,808 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 [2020-08-18 21:08:23,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-18 21:08:23,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2020-08-18 21:08:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-18 21:08:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2020-08-18 21:08:23,829 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 40 [2020-08-18 21:08:23,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:23,829 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2020-08-18 21:08:23,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:08:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2020-08-18 21:08:23,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 21:08:23,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:23,831 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] [2020-08-18 21:08:23,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-18 21:08:23,831 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]=== [2020-08-18 21:08:23,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:23,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-08-18 21:08:23,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:23,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587730729] [2020-08-18 21:08:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:24,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:08:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:08:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:08:24,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587730729] [2020-08-18 21:08:24,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:08:24,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 21:08:24,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683868006] [2020-08-18 21:08:24,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:08:24,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:08:24,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:08:24,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:08:24,090 INFO L87 Difference]: Start difference. First operand 237 states and 284 transitions. Second operand 10 states. [2020-08-18 21:08:24,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:08:24,750 INFO L93 Difference]: Finished difference Result 441 states and 526 transitions. [2020-08-18 21:08:24,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 21:08:24,750 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-18 21:08:24,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:08:24,752 INFO L225 Difference]: With dead ends: 441 [2020-08-18 21:08:24,752 INFO L226 Difference]: Without dead ends: 349 [2020-08-18 21:08:24,753 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 [2020-08-18 21:08:24,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-18 21:08:24,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 239. [2020-08-18 21:08:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-18 21:08:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2020-08-18 21:08:24,768 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 40 [2020-08-18 21:08:24,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:08:24,768 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2020-08-18 21:08:24,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:08:24,768 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2020-08-18 21:08:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 21:08:24,769 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:08:24,769 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] [2020-08-18 21:08:24,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-18 21:08:24,770 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]=== [2020-08-18 21:08:24,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:08:24,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-08-18 21:08:24,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:08:24,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753102167] [2020-08-18 21:08:24,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:08:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:08:24,785 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:08:24,785 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:08:24,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-18 21:08:24,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:08:24 BoogieIcfgContainer [2020-08-18 21:08:24,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:08:24,812 INFO L168 Benchmark]: Toolchain (without parser) took 11416.57 ms. Allocated memory was 146.8 MB in the beginning and 336.6 MB in the end (delta: 189.8 MB). Free memory was 101.3 MB in the beginning and 128.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 162.3 MB. Max. memory is 7.1 GB. [2020-08-18 21:08:24,812 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 21:08:24,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.76 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.1 MB in the beginning and 169.5 MB in the end (delta: -68.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-18 21:08:24,813 INFO L168 Benchmark]: Boogie Preprocessor took 77.99 ms. Allocated memory is still 203.4 MB. Free memory was 169.5 MB in the beginning and 166.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-18 21:08:24,814 INFO L168 Benchmark]: RCFGBuilder took 735.46 ms. Allocated memory is still 203.4 MB. Free memory was 166.1 MB in the beginning and 110.7 MB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2020-08-18 21:08:24,814 INFO L168 Benchmark]: TraceAbstraction took 9957.47 ms. Allocated memory was 203.4 MB in the beginning and 336.6 MB in the end (delta: 133.2 MB). Free memory was 110.0 MB in the beginning and 128.8 MB in the end (delta: -18.8 MB). Peak memory consumption was 114.4 MB. Max. memory is 7.1 GB. [2020-08-18 21:08:24,816 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 639.76 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.1 MB in the beginning and 169.5 MB in the end (delta: -68.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.99 ms. Allocated memory is still 203.4 MB. Free memory was 169.5 MB in the beginning and 166.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 735.46 ms. Allocated memory is still 203.4 MB. Free memory was 166.1 MB in the beginning and 110.7 MB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9957.47 ms. Allocated memory was 203.4 MB in the beginning and 336.6 MB in the end (delta: 133.2 MB). Free memory was 110.0 MB in the beginning and 128.8 MB in the end (delta: -18.8 MB). Peak memory consumption was 114.4 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, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.0s 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, 0.2s SatisfiabilityAnalysisTime, 1.8s 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...