/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=SMALLEST -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 17:06:34,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:06:34,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:06:34,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:06:34,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:06:34,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:06:34,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:06:34,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:06:34,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:06:34,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:06:34,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:06:34,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:06:34,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:06:34,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:06:34,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:06:34,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:06:34,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:06:34,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:06:34,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:06:34,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:06:34,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:06:34,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:06:34,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:06:34,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:06:34,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:06:34,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:06:34,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:06:34,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:06:34,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:06:34,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:06:34,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:06:34,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:06:34,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:06:34,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:06:34,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:06:34,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:06:34,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:06:34,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:06:34,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:06:34,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:06:34,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:06:34,297 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 17:06:34,344 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:06:34,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:06:34,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:06:34,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:06:34,348 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:06:34,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:06:34,348 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:06:34,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:06:34,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:06:34,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:06:34,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:06:34,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:06:34,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:06:34,351 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:06:34,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:06:34,352 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:06:34,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:06:34,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:06:34,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:06:34,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:06:34,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:06:34,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:06:34,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:06:34,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:06:34,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:06:34,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:06:34,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:06:34,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:06:34,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:06:34,355 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 17:06:34,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:06:34,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:06:34,719 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:06:34,721 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:06:34,721 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:06:34,722 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-18 17:06:34,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8039fc06/9b9df38dfbf94f3a9db24f36a4d34f26/FLAG12ac04a48 [2020-08-18 17:06:35,392 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:06:35,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-18 17:06:35,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8039fc06/9b9df38dfbf94f3a9db24f36a4d34f26/FLAG12ac04a48 [2020-08-18 17:06:35,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8039fc06/9b9df38dfbf94f3a9db24f36a4d34f26 [2020-08-18 17:06:35,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:06:35,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:06:35,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:06:35,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:06:35,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:06:35,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:06:35" (1/1) ... [2020-08-18 17:06:35,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e6d6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:35, skipping insertion in model container [2020-08-18 17:06:35,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:06:35" (1/1) ... [2020-08-18 17:06:35,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:06:35,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:06:36,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:06:36,180 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:06:36,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:06:36,283 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:06:36,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:36 WrapperNode [2020-08-18 17:06:36,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:06:36,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:06:36,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:06:36,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:06:36,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:36" (1/1) ... [2020-08-18 17:06:36,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:36" (1/1) ... [2020-08-18 17:06:36,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:36" (1/1) ... [2020-08-18 17:06:36,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:36" (1/1) ... [2020-08-18 17:06:36,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:36" (1/1) ... [2020-08-18 17:06:36,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:36" (1/1) ... [2020-08-18 17:06:36,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:36" (1/1) ... [2020-08-18 17:06:36,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:06:36,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:06:36,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:06:36,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:06:36,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:36" (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 17:06:36,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:06:36,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:06:36,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:06:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 17:06:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 17:06:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 17:06:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 17:06:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 17:06:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 17:06:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 17:06:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 17:06:36,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 17:06:36,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 17:06:36,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 17:06:36,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 17:06:36,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 17:06:36,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 17:06:36,473 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 17:06:36,473 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 17:06:36,473 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 17:06:36,473 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 17:06:36,473 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 17:06:36,473 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 17:06:36,474 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 17:06:36,474 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 17:06:36,474 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 17:06:36,474 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 17:06:36,474 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 17:06:36,474 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 17:06:36,475 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 17:06:36,475 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 17:06:36,475 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 17:06:36,475 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 17:06:36,475 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 17:06:36,475 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 17:06:36,475 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 17:06:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 17:06:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 17:06:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 17:06:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 17:06:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 17:06:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 17:06:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 17:06:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 17:06:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 17:06:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 17:06:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 17:06:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 17:06:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 17:06:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 17:06:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 17:06:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 17:06:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 17:06:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:06:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 17:06:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 17:06:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 17:06:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 17:06:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 17:06:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 17:06:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 17:06:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 17:06:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 17:06:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 17:06:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 17:06:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 17:06:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 17:06:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 17:06:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 17:06:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 17:06:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 17:06:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 17:06:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 17:06:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 17:06:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 17:06:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 17:06:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 17:06:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 17:06:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 17:06:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 17:06:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 17:06:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 17:06:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 17:06:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 17:06:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 17:06:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 17:06:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 17:06:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 17:06:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 17:06:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 17:06:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 17:06:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 17:06:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 17:06:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 17:06:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 17:06:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 17:06:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 17:06:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 17:06:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 17:06:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 17:06:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 17:06:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 17:06:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 17:06:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 17:06:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 17:06:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 17:06:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:06:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:06:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:06:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:06:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 17:06:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 17:06:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:06:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:06:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:06:37,202 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:06:37,203 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-18 17:06:37,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:06:37 BoogieIcfgContainer [2020-08-18 17:06:37,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:06:37,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:06:37,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:06:37,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:06:37,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:06:35" (1/3) ... [2020-08-18 17:06:37,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a16ba1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:06:37, skipping insertion in model container [2020-08-18 17:06:37,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:36" (2/3) ... [2020-08-18 17:06:37,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a16ba1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:06:37, skipping insertion in model container [2020-08-18 17:06:37,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:06:37" (3/3) ... [2020-08-18 17:06:37,223 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-08-18 17:06:37,235 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:06:37,244 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-18 17:06:37,259 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-18 17:06:37,290 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:06:37,291 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:06:37,291 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:06:37,291 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:06:37,291 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:06:37,292 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:06:37,292 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:06:37,292 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:06:37,316 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-08-18 17:06:37,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-18 17:06:37,323 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:37,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:06:37,325 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 17:06:37,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:37,333 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-08-18 17:06:37,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:37,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632061461] [2020-08-18 17:06:37,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:37,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:37,563 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 17:06:37,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632061461] [2020-08-18 17:06:37,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:37,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:06:37,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567708252] [2020-08-18 17:06:37,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:06:37,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:37,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:06:37,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:06:37,593 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-08-18 17:06:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:37,883 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-08-18 17:06:37,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:06:37,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-18 17:06:37,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:37,897 INFO L225 Difference]: With dead ends: 188 [2020-08-18 17:06:37,897 INFO L226 Difference]: Without dead ends: 100 [2020-08-18 17:06:37,902 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 17:06:37,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-18 17:06:37,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-08-18 17:06:37,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-18 17:06:37,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-18 17:06:37,956 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-08-18 17:06:37,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:37,957 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-18 17:06:37,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:06:37,957 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-18 17:06:37,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 17:06:37,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:37,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:06:37,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:06:37,959 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 17:06:37,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:37,960 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-08-18 17:06:37,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:37,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633600449] [2020-08-18 17:06:37,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:38,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:38,027 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 17:06:38,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633600449] [2020-08-18 17:06:38,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:38,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:06:38,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180074051] [2020-08-18 17:06:38,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:06:38,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:38,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:06:38,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:06:38,032 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-08-18 17:06:38,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:38,199 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-08-18 17:06:38,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:06:38,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-18 17:06:38,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:38,201 INFO L225 Difference]: With dead ends: 85 [2020-08-18 17:06:38,201 INFO L226 Difference]: Without dead ends: 83 [2020-08-18 17:06:38,202 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 17:06:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-18 17:06:38,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-18 17:06:38,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-18 17:06:38,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-08-18 17:06:38,214 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-08-18 17:06:38,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:38,214 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-08-18 17:06:38,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:06:38,214 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-08-18 17:06:38,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 17:06:38,215 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:38,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:06:38,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:06:38,216 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 17:06:38,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:38,216 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-08-18 17:06:38,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:38,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434225535] [2020-08-18 17:06:38,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:38,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:38,327 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 17:06:38,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434225535] [2020-08-18 17:06:38,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:38,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:06:38,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461214766] [2020-08-18 17:06:38,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:06:38,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:38,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:06:38,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:06:38,332 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-08-18 17:06:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:38,590 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-08-18 17:06:38,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 17:06:38,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 17:06:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:38,592 INFO L225 Difference]: With dead ends: 140 [2020-08-18 17:06:38,593 INFO L226 Difference]: Without dead ends: 138 [2020-08-18 17:06:38,593 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 17:06:38,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-18 17:06:38,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-08-18 17:06:38,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-18 17:06:38,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-18 17:06:38,604 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 14 [2020-08-18 17:06:38,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:38,604 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-18 17:06:38,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:06:38,604 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-18 17:06:38,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 17:06:38,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:38,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:06:38,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:06:38,606 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 17:06:38,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:38,606 INFO L82 PathProgramCache]: Analyzing trace with hash -646358176, now seen corresponding path program 1 times [2020-08-18 17:06:38,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:38,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343500861] [2020-08-18 17:06:38,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:38,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:38,691 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 17:06:38,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343500861] [2020-08-18 17:06:38,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:38,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:06:38,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771026467] [2020-08-18 17:06:38,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:06:38,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:38,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:06:38,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:06:38,697 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2020-08-18 17:06:38,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:38,889 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-08-18 17:06:38,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:06:38,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 17:06:38,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:38,891 INFO L225 Difference]: With dead ends: 85 [2020-08-18 17:06:38,891 INFO L226 Difference]: Without dead ends: 83 [2020-08-18 17:06:38,892 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 17:06:38,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-18 17:06:38,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-08-18 17:06:38,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-18 17:06:38,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-08-18 17:06:38,912 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-08-18 17:06:38,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:38,913 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-08-18 17:06:38,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:06:38,913 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-08-18 17:06:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 17:06:38,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:38,914 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 17:06:38,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:06:38,915 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 17:06:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:38,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-08-18 17:06:38,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:38,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399978505] [2020-08-18 17:06:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:39,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:06:39,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399978505] [2020-08-18 17:06:39,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:39,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:06:39,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942838818] [2020-08-18 17:06:39,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:06:39,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:39,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:06:39,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:06:39,027 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-08-18 17:06:39,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:39,175 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-08-18 17:06:39,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:06:39,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 17:06:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:39,177 INFO L225 Difference]: With dead ends: 83 [2020-08-18 17:06:39,177 INFO L226 Difference]: Without dead ends: 79 [2020-08-18 17:06:39,178 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 17:06:39,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-18 17:06:39,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-08-18 17:06:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 17:06:39,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-08-18 17:06:39,185 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-08-18 17:06:39,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:39,186 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-08-18 17:06:39,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:06:39,186 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-08-18 17:06:39,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 17:06:39,187 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:39,187 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 17:06:39,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:06:39,187 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 17:06:39,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:39,188 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-08-18 17:06:39,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:39,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060618328] [2020-08-18 17:06:39,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:39,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:39,247 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 17:06:39,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060618328] [2020-08-18 17:06:39,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:39,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:06:39,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583198237] [2020-08-18 17:06:39,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:06:39,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:39,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:06:39,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:06:39,249 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 6 states. [2020-08-18 17:06:39,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:39,452 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-08-18 17:06:39,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:06:39,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-18 17:06:39,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:39,454 INFO L225 Difference]: With dead ends: 136 [2020-08-18 17:06:39,454 INFO L226 Difference]: Without dead ends: 116 [2020-08-18 17:06:39,455 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 17:06:39,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-18 17:06:39,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-08-18 17:06:39,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-18 17:06:39,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-18 17:06:39,462 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-08-18 17:06:39,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:39,462 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-18 17:06:39,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:06:39,463 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-18 17:06:39,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 17:06:39,464 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:39,464 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 17:06:39,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:06:39,464 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 17:06:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:39,465 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-08-18 17:06:39,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:39,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952465519] [2020-08-18 17:06:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:39,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:39,529 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 17:06:39,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952465519] [2020-08-18 17:06:39,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:39,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:06:39,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550979247] [2020-08-18 17:06:39,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:06:39,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:39,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:06:39,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:06:39,531 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-08-18 17:06:39,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:39,686 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-08-18 17:06:39,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:06:39,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-18 17:06:39,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:39,688 INFO L225 Difference]: With dead ends: 141 [2020-08-18 17:06:39,688 INFO L226 Difference]: Without dead ends: 99 [2020-08-18 17:06:39,691 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 17:06:39,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-18 17:06:39,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-18 17:06:39,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 17:06:39,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 17:06:39,707 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 24 [2020-08-18 17:06:39,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:39,707 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 17:06:39,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:06:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 17:06:39,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 17:06:39,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:39,711 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 17:06:39,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 17:06:39,711 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 17:06:39,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:39,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-08-18 17:06:39,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:39,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228410863] [2020-08-18 17:06:39,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:39,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:39,775 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 17:06:39,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228410863] [2020-08-18 17:06:39,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:39,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:06:39,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880554000] [2020-08-18 17:06:39,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:06:39,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:39,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:06:39,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:06:39,781 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-18 17:06:39,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:39,903 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-08-18 17:06:39,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:06:39,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 17:06:39,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:39,905 INFO L225 Difference]: With dead ends: 78 [2020-08-18 17:06:39,905 INFO L226 Difference]: Without dead ends: 76 [2020-08-18 17:06:39,905 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 17:06:39,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-18 17:06:39,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-08-18 17:06:39,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 17:06:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-18 17:06:39,911 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 25 [2020-08-18 17:06:39,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:39,912 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-18 17:06:39,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:06:39,912 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-18 17:06:39,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 17:06:39,913 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:39,913 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 17:06:39,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 17:06:39,914 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 17:06:39,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:39,914 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-08-18 17:06:39,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:39,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687627726] [2020-08-18 17:06:39,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:39,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:39,997 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 17:06:39,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687627726] [2020-08-18 17:06:39,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:39,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:06:39,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391247267] [2020-08-18 17:06:39,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:06:39,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:39,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:06:40,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:06:40,000 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 5 states. [2020-08-18 17:06:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:40,229 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2020-08-18 17:06:40,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:06:40,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 17:06:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:40,230 INFO L225 Difference]: With dead ends: 194 [2020-08-18 17:06:40,231 INFO L226 Difference]: Without dead ends: 130 [2020-08-18 17:06:40,232 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 17:06:40,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-18 17:06:40,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2020-08-18 17:06:40,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 17:06:40,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 17:06:40,248 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 27 [2020-08-18 17:06:40,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:40,248 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 17:06:40,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:06:40,248 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 17:06:40,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 17:06:40,250 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:40,254 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 17:06:40,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 17:06:40,255 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 17:06:40,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:40,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-08-18 17:06:40,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:40,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139974129] [2020-08-18 17:06:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:40,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:40,334 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 17:06:40,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139974129] [2020-08-18 17:06:40,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:40,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:06:40,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587697419] [2020-08-18 17:06:40,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:06:40,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:40,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:06:40,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:06:40,338 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 5 states. [2020-08-18 17:06:40,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:40,505 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-08-18 17:06:40,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:06:40,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 17:06:40,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:40,507 INFO L225 Difference]: With dead ends: 79 [2020-08-18 17:06:40,507 INFO L226 Difference]: Without dead ends: 77 [2020-08-18 17:06:40,508 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 17:06:40,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-18 17:06:40,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-08-18 17:06:40,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 17:06:40,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-18 17:06:40,513 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 27 [2020-08-18 17:06:40,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:40,514 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-18 17:06:40,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:06:40,514 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-18 17:06:40,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 17:06:40,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:40,515 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 17:06:40,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 17:06:40,516 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 17:06:40,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:40,516 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-08-18 17:06:40,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:40,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269501367] [2020-08-18 17:06:40,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:40,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:40,585 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 17:06:40,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269501367] [2020-08-18 17:06:40,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:40,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:06:40,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67460441] [2020-08-18 17:06:40,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:06:40,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:40,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:06:40,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:06:40,588 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 6 states. [2020-08-18 17:06:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:40,899 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-08-18 17:06:40,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 17:06:40,899 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-18 17:06:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:40,901 INFO L225 Difference]: With dead ends: 182 [2020-08-18 17:06:40,901 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 17:06:40,902 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 17:06:40,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 17:06:40,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-08-18 17:06:40,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-18 17:06:40,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-08-18 17:06:40,912 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 28 [2020-08-18 17:06:40,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:40,914 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-08-18 17:06:40,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:06:40,915 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-08-18 17:06:40,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 17:06:40,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:40,916 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 17:06:40,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 17:06:40,916 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 17:06:40,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:40,917 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-08-18 17:06:40,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:40,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963636777] [2020-08-18 17:06:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:41,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:41,151 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 17:06:41,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963636777] [2020-08-18 17:06:41,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:41,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 17:06:41,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997099769] [2020-08-18 17:06:41,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 17:06:41,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:41,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 17:06:41,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:06:41,154 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 8 states. [2020-08-18 17:06:41,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:41,844 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2020-08-18 17:06:41,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 17:06:41,846 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-08-18 17:06:41,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:41,851 INFO L225 Difference]: With dead ends: 237 [2020-08-18 17:06:41,851 INFO L226 Difference]: Without dead ends: 235 [2020-08-18 17:06:41,853 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 17:06:41,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-18 17:06:41,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 98. [2020-08-18 17:06:41,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-18 17:06:41,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-08-18 17:06:41,869 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 28 [2020-08-18 17:06:41,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:41,869 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-08-18 17:06:41,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 17:06:41,870 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-08-18 17:06:41,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 17:06:41,877 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:41,877 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 17:06:41,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 17:06:41,878 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 17:06:41,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:41,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1932526751, now seen corresponding path program 1 times [2020-08-18 17:06:41,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:41,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398499883] [2020-08-18 17:06:41,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:41,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:41,960 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 17:06:41,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398499883] [2020-08-18 17:06:41,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:41,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:06:41,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828397876] [2020-08-18 17:06:41,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:06:41,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:41,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:06:41,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:06:41,964 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 5 states. [2020-08-18 17:06:42,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:42,174 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-08-18 17:06:42,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 17:06:42,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-18 17:06:42,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:42,176 INFO L225 Difference]: With dead ends: 145 [2020-08-18 17:06:42,176 INFO L226 Difference]: Without dead ends: 127 [2020-08-18 17:06:42,177 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 17:06:42,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-18 17:06:42,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-08-18 17:06:42,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 17:06:42,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2020-08-18 17:06:42,187 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 30 [2020-08-18 17:06:42,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:42,188 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2020-08-18 17:06:42,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:06:42,188 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2020-08-18 17:06:42,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 17:06:42,190 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:42,190 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 17:06:42,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 17:06:42,191 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 17:06:42,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:42,191 INFO L82 PathProgramCache]: Analyzing trace with hash -250794977, now seen corresponding path program 1 times [2020-08-18 17:06:42,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:42,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831202064] [2020-08-18 17:06:42,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:42,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:42,250 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 17:06:42,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831202064] [2020-08-18 17:06:42,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:42,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:06:42,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651880244] [2020-08-18 17:06:42,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:06:42,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:42,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:06:42,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:06:42,253 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand 4 states. [2020-08-18 17:06:42,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:42,405 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-08-18 17:06:42,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:06:42,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-18 17:06:42,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:42,407 INFO L225 Difference]: With dead ends: 119 [2020-08-18 17:06:42,407 INFO L226 Difference]: Without dead ends: 117 [2020-08-18 17:06:42,408 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 17:06:42,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-18 17:06:42,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-18 17:06:42,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-18 17:06:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2020-08-18 17:06:42,417 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 30 [2020-08-18 17:06:42,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:42,417 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2020-08-18 17:06:42,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:06:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2020-08-18 17:06:42,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-18 17:06:42,419 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:42,419 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 17:06:42,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 17:06:42,419 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 17:06:42,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:42,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-08-18 17:06:42,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:42,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250076709] [2020-08-18 17:06:42,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:42,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:42,618 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 17:06:42,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250076709] [2020-08-18 17:06:42,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:42,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 17:06:42,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889570423] [2020-08-18 17:06:42,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 17:06:42,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:42,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 17:06:42,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:06:42,620 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand 8 states. [2020-08-18 17:06:43,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:43,187 INFO L93 Difference]: Finished difference Result 240 states and 275 transitions. [2020-08-18 17:06:43,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 17:06:43,188 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-18 17:06:43,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:43,190 INFO L225 Difference]: With dead ends: 240 [2020-08-18 17:06:43,190 INFO L226 Difference]: Without dead ends: 238 [2020-08-18 17:06:43,190 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 17:06:43,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-18 17:06:43,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 120. [2020-08-18 17:06:43,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 17:06:43,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-08-18 17:06:43,199 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 31 [2020-08-18 17:06:43,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:43,199 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-08-18 17:06:43,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 17:06:43,200 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-08-18 17:06:43,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 17:06:43,200 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:43,200 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 17:06:43,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 17:06:43,201 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 17:06:43,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:43,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-08-18 17:06:43,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:43,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274964297] [2020-08-18 17:06:43,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:43,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:43,268 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 17:06:43,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274964297] [2020-08-18 17:06:43,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:06:43,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 17:06:43,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957279992] [2020-08-18 17:06:43,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:06:43,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:43,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:06:43,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:06:43,270 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 6 states. [2020-08-18 17:06:43,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:43,535 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2020-08-18 17:06:43,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 17:06:43,536 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 17:06:43,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:43,537 INFO L225 Difference]: With dead ends: 207 [2020-08-18 17:06:43,537 INFO L226 Difference]: Without dead ends: 145 [2020-08-18 17:06:43,538 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 17:06:43,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-18 17:06:43,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2020-08-18 17:06:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-18 17:06:43,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-08-18 17:06:43,546 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 33 [2020-08-18 17:06:43,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:43,547 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-08-18 17:06:43,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:06:43,547 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-08-18 17:06:43,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 17:06:43,547 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:43,548 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 17:06:43,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 17:06:43,548 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 17:06:43,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:43,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-08-18 17:06:43,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:43,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363555434] [2020-08-18 17:06:43,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:43,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:43,643 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 17:06:43,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363555434] [2020-08-18 17:06:43,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:43,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 17:06:43,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114977651] [2020-08-18 17:06:43,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 17:06:43,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:43,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 17:06:43,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:06:43,646 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 7 states. [2020-08-18 17:06:43,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:43,936 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-08-18 17:06:43,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 17:06:43,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-18 17:06:43,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:43,938 INFO L225 Difference]: With dead ends: 198 [2020-08-18 17:06:43,938 INFO L226 Difference]: Without dead ends: 178 [2020-08-18 17:06:43,938 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 17:06:43,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-18 17:06:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-08-18 17:06:43,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 17:06:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-08-18 17:06:43,948 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 33 [2020-08-18 17:06:43,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:43,948 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-08-18 17:06:43,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 17:06:43,948 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-08-18 17:06:43,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 17:06:43,949 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:43,949 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 17:06:43,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 17:06:43,950 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 17:06:43,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:43,950 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-08-18 17:06:43,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:43,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252509949] [2020-08-18 17:06:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:44,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:44,016 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 17:06:44,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252509949] [2020-08-18 17:06:44,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:44,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:06:44,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472832745] [2020-08-18 17:06:44,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:06:44,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:44,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:06:44,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:06:44,018 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 6 states. [2020-08-18 17:06:44,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:44,237 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2020-08-18 17:06:44,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 17:06:44,238 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 17:06:44,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:44,239 INFO L225 Difference]: With dead ends: 182 [2020-08-18 17:06:44,239 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 17:06:44,243 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 17:06:44,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 17:06:44,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2020-08-18 17:06:44,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-18 17:06:44,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2020-08-18 17:06:44,257 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 33 [2020-08-18 17:06:44,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:44,258 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2020-08-18 17:06:44,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:06:44,258 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2020-08-18 17:06:44,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 17:06:44,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:44,259 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 17:06:44,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 17:06:44,259 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 17:06:44,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:44,259 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-08-18 17:06:44,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:44,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689431898] [2020-08-18 17:06:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:44,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:44,341 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 17:06:44,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689431898] [2020-08-18 17:06:44,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:06:44,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 17:06:44,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359392866] [2020-08-18 17:06:44,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 17:06:44,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:44,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 17:06:44,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:06:44,343 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand 7 states. [2020-08-18 17:06:44,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:44,648 INFO L93 Difference]: Finished difference Result 241 states and 276 transitions. [2020-08-18 17:06:44,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 17:06:44,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-18 17:06:44,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:44,651 INFO L225 Difference]: With dead ends: 241 [2020-08-18 17:06:44,652 INFO L226 Difference]: Without dead ends: 210 [2020-08-18 17:06:44,653 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 17:06:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-18 17:06:44,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 169. [2020-08-18 17:06:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-18 17:06:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-08-18 17:06:44,663 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 36 [2020-08-18 17:06:44,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:44,663 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-08-18 17:06:44,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 17:06:44,664 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-08-18 17:06:44,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 17:06:44,664 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:44,664 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 17:06:44,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-18 17:06:44,665 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 17:06:44,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:44,665 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-08-18 17:06:44,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:44,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813543144] [2020-08-18 17:06:44,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:44,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:44,701 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 17:06:44,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813543144] [2020-08-18 17:06:44,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:44,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:06:44,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61505738] [2020-08-18 17:06:44,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:06:44,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:44,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:06:44,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:06:44,703 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 4 states. [2020-08-18 17:06:44,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:44,876 INFO L93 Difference]: Finished difference Result 354 states and 437 transitions. [2020-08-18 17:06:44,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:06:44,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-08-18 17:06:44,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:44,879 INFO L225 Difference]: With dead ends: 354 [2020-08-18 17:06:44,879 INFO L226 Difference]: Without dead ends: 258 [2020-08-18 17:06:44,880 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 17:06:44,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-18 17:06:44,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-18 17:06:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-18 17:06:44,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 262 transitions. [2020-08-18 17:06:44,915 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 262 transitions. Word has length 36 [2020-08-18 17:06:44,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:44,915 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 262 transitions. [2020-08-18 17:06:44,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:06:44,915 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 262 transitions. [2020-08-18 17:06:44,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 17:06:44,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:44,916 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 17:06:44,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-18 17:06:44,917 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 17:06:44,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:44,917 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-08-18 17:06:44,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:44,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851321526] [2020-08-18 17:06:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:45,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:45,158 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 17:06:45,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851321526] [2020-08-18 17:06:45,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:06:45,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 17:06:45,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095886928] [2020-08-18 17:06:45,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:06:45,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:45,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:06:45,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:06:45,161 INFO L87 Difference]: Start difference. First operand 218 states and 262 transitions. Second operand 10 states. [2020-08-18 17:06:45,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:45,911 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2020-08-18 17:06:45,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 17:06:45,912 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-18 17:06:45,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:45,914 INFO L225 Difference]: With dead ends: 430 [2020-08-18 17:06:45,915 INFO L226 Difference]: Without dead ends: 338 [2020-08-18 17:06:45,916 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 17:06:45,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-18 17:06:45,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 235. [2020-08-18 17:06:45,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-18 17:06:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 282 transitions. [2020-08-18 17:06:45,932 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 282 transitions. Word has length 40 [2020-08-18 17:06:45,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:45,932 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 282 transitions. [2020-08-18 17:06:45,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:06:45,933 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 282 transitions. [2020-08-18 17:06:45,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 17:06:45,933 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:45,934 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 17:06:45,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-18 17:06:45,934 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 17:06:45,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:45,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-08-18 17:06:45,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:45,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318024085] [2020-08-18 17:06:45,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:45,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:45,995 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 17:06:45,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318024085] [2020-08-18 17:06:45,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:45,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:06:45,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347478226] [2020-08-18 17:06:45,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:06:45,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:45,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:06:45,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:06:45,999 INFO L87 Difference]: Start difference. First operand 235 states and 282 transitions. Second operand 6 states. [2020-08-18 17:06:46,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:46,228 INFO L93 Difference]: Finished difference Result 353 states and 426 transitions. [2020-08-18 17:06:46,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 17:06:46,230 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-08-18 17:06:46,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:46,232 INFO L225 Difference]: With dead ends: 353 [2020-08-18 17:06:46,232 INFO L226 Difference]: Without dead ends: 244 [2020-08-18 17:06:46,233 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 17:06:46,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-18 17:06:46,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2020-08-18 17:06:46,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-18 17:06:46,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2020-08-18 17:06:46,246 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 40 [2020-08-18 17:06:46,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:46,246 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2020-08-18 17:06:46,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:06:46,247 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2020-08-18 17:06:46,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 17:06:46,247 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:46,248 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 17:06:46,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-18 17:06:46,248 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 17:06:46,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:46,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-08-18 17:06:46,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:46,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125988926] [2020-08-18 17:06:46,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:46,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:46,546 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 17:06:46,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125988926] [2020-08-18 17:06:46,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:06:46,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 17:06:46,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732742812] [2020-08-18 17:06:46,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:06:46,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:46,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:06:46,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:06:46,548 INFO L87 Difference]: Start difference. First operand 237 states and 284 transitions. Second operand 10 states. [2020-08-18 17:06:47,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:47,195 INFO L93 Difference]: Finished difference Result 441 states and 526 transitions. [2020-08-18 17:06:47,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 17:06:47,196 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-18 17:06:47,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:47,198 INFO L225 Difference]: With dead ends: 441 [2020-08-18 17:06:47,198 INFO L226 Difference]: Without dead ends: 349 [2020-08-18 17:06:47,199 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 17:06:47,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-18 17:06:47,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 239. [2020-08-18 17:06:47,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-18 17:06:47,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2020-08-18 17:06:47,214 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 40 [2020-08-18 17:06:47,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:47,214 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2020-08-18 17:06:47,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:06:47,214 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2020-08-18 17:06:47,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 17:06:47,215 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:47,215 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 17:06:47,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-18 17:06:47,215 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 17:06:47,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:47,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-08-18 17:06:47,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:47,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081012826] [2020-08-18 17:06:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:06:47,232 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:06:47,232 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:06:47,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-18 17:06:47,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:06:47 BoogieIcfgContainer [2020-08-18 17:06:47,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:06:47,261 INFO L168 Benchmark]: Toolchain (without parser) took 11602.27 ms. Allocated memory was 138.9 MB in the beginning and 344.5 MB in the end (delta: 205.5 MB). Free memory was 100.4 MB in the beginning and 174.0 MB in the end (delta: -73.6 MB). Peak memory consumption was 131.9 MB. Max. memory is 7.1 GB. [2020-08-18 17:06:47,262 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 17:06:47,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.98 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.2 MB in the beginning and 168.5 MB in the end (delta: -68.3 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-08-18 17:06:47,263 INFO L168 Benchmark]: Boogie Preprocessor took 121.82 ms. Allocated memory is still 201.3 MB. Free memory was 168.5 MB in the beginning and 165.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-08-18 17:06:47,263 INFO L168 Benchmark]: RCFGBuilder took 805.62 ms. Allocated memory is still 201.3 MB. Free memory was 165.1 MB in the beginning and 109.7 MB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2020-08-18 17:06:47,264 INFO L168 Benchmark]: TraceAbstraction took 10043.56 ms. Allocated memory was 201.3 MB in the beginning and 344.5 MB in the end (delta: 143.1 MB). Free memory was 109.0 MB in the beginning and 174.0 MB in the end (delta: -65.0 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. [2020-08-18 17:06:47,267 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 625.98 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.2 MB in the beginning and 168.5 MB in the end (delta: -68.3 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.82 ms. Allocated memory is still 201.3 MB. Free memory was 168.5 MB in the beginning and 165.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 805.62 ms. Allocated memory is still 201.3 MB. Free memory was 165.1 MB in the beginning and 109.7 MB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10043.56 ms. Allocated memory was 201.3 MB in the beginning and 344.5 MB in the end (delta: 143.1 MB). Free memory was 109.0 MB in the beginning and 174.0 MB in the end (delta: -65.0 MB). Peak memory consumption was 78.1 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: 9.9s, OverallIterations: 24, TraceHistogramMax: 2, AutomataDifference: 6.8s, 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: 0.3s AutomataMinimizationTime, 23 MinimizatonAttempts, 892 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s 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...