/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=SHALLOWEST -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 20:19:47,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:19:47,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:19:47,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:19:47,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:19:47,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:19:47,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:19:47,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:19:47,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:19:47,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:19:47,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:19:47,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:19:47,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:19:47,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:19:47,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:19:47,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:19:47,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:19:47,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:19:47,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:19:47,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:19:47,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:19:47,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:19:47,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:19:47,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:19:48,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:19:48,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:19:48,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:19:48,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:19:48,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:19:48,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:19:48,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:19:48,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:19:48,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:19:48,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:19:48,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:19:48,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:19:48,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:19:48,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:19:48,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:19:48,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:19:48,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:19:48,024 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 20:19:48,057 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:19:48,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:19:48,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:19:48,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:19:48,059 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:19:48,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:19:48,060 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:19:48,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:19:48,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:19:48,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:19:48,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:19:48,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:19:48,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:19:48,061 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:19:48,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:19:48,061 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:19:48,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:19:48,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:19:48,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:19:48,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:19:48,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:19:48,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:19:48,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:19:48,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:19:48,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:19:48,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:19:48,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:19:48,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:19:48,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:19:48,064 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=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:19:48,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:19:48,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:19:48,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:19:48,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:19:48,412 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:19:48,413 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-18 20:19:48,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/823e8c3d4/b66b9ee7b0cc4d4ebe404a3db63dc17d/FLAG6b5966f15 [2020-08-18 20:19:49,017 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:19:49,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-18 20:19:49,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/823e8c3d4/b66b9ee7b0cc4d4ebe404a3db63dc17d/FLAG6b5966f15 [2020-08-18 20:19:49,310 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/823e8c3d4/b66b9ee7b0cc4d4ebe404a3db63dc17d [2020-08-18 20:19:49,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:19:49,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:19:49,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:19:49,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:19:49,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:19:49,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:19:49" (1/1) ... [2020-08-18 20:19:49,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30847a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:49, skipping insertion in model container [2020-08-18 20:19:49,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:19:49" (1/1) ... [2020-08-18 20:19:49,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:19:49,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:19:49,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:19:49,834 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:19:49,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:19:49,941 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:19:49,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:49 WrapperNode [2020-08-18 20:19:49,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:19:49,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:19:49,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:19:49,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:19:49,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:49" (1/1) ... [2020-08-18 20:19:49,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:49" (1/1) ... [2020-08-18 20:19:49,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:49" (1/1) ... [2020-08-18 20:19:49,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:49" (1/1) ... [2020-08-18 20:19:49,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:49" (1/1) ... [2020-08-18 20:19:50,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:49" (1/1) ... [2020-08-18 20:19:50,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:49" (1/1) ... [2020-08-18 20:19:50,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:19:50,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:19:50,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:19:50,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:19:50,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:49" (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 20:19:50,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:19:50,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:19:50,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:19:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 20:19:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 20:19:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 20:19:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 20:19:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 20:19:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 20:19:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 20:19:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 20:19:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 20:19:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 20:19:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 20:19:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 20:19:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 20:19:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 20:19:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 20:19:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 20:19:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 20:19:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 20:19:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 20:19:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 20:19:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 20:19:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 20:19:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 20:19:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 20:19:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 20:19:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 20:19:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 20:19:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 20:19:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 20:19:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 20:19:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 20:19:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 20:19:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 20:19:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 20:19:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 20:19:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 20:19:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 20:19:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 20:19:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 20:19:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 20:19:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 20:19:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 20:19:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 20:19:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 20:19:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 20:19:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 20:19:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 20:19:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 20:19:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 20:19:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 20:19:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:19:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 20:19:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 20:19:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:19:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 20:19:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 20:19:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 20:19:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 20:19:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 20:19:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 20:19:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 20:19:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 20:19:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 20:19:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 20:19:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 20:19:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 20:19:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 20:19:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 20:19:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 20:19:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 20:19:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 20:19:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 20:19:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 20:19:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 20:19:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 20:19:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 20:19:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 20:19:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 20:19:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 20:19:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 20:19:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 20:19:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 20:19:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 20:19:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 20:19:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 20:19:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 20:19:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 20:19:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 20:19:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 20:19:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 20:19:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 20:19:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 20:19:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 20:19:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 20:19:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 20:19:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 20:19:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 20:19:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 20:19:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 20:19:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 20:19:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 20:19:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 20:19:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 20:19:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:19:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:19:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:19:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:19:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:19:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:19:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:19:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:19:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:19:50,818 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:19:50,818 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-18 20:19:50,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:19:50 BoogieIcfgContainer [2020-08-18 20:19:50,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:19:50,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:19:50,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:19:50,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:19:50,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:19:49" (1/3) ... [2020-08-18 20:19:50,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b50112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:19:50, skipping insertion in model container [2020-08-18 20:19:50,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:49" (2/3) ... [2020-08-18 20:19:50,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b50112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:19:50, skipping insertion in model container [2020-08-18 20:19:50,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:19:50" (3/3) ... [2020-08-18 20:19:50,836 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-08-18 20:19:50,847 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:19:50,854 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-18 20:19:50,865 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-18 20:19:50,887 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:19:50,888 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:19:50,888 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:19:50,888 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:19:50,888 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:19:50,889 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:19:50,889 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:19:50,889 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:19:50,913 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-08-18 20:19:50,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-18 20:19:50,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:50,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:19:50,921 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 20:19:50,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:50,927 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-08-18 20:19:50,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:50,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585266816] [2020-08-18 20:19:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:51,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:51,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:19:51,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585266816] [2020-08-18 20:19:51,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:51,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:19:51,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905596765] [2020-08-18 20:19:51,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:19:51,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:51,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:19:51,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:19:51,176 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-08-18 20:19:51,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:51,452 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-08-18 20:19:51,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:19:51,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-18 20:19:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:51,466 INFO L225 Difference]: With dead ends: 188 [2020-08-18 20:19:51,466 INFO L226 Difference]: Without dead ends: 100 [2020-08-18 20:19:51,470 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 20:19:51,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-18 20:19:51,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-08-18 20:19:51,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-18 20:19:51,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-18 20:19:51,512 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-08-18 20:19:51,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:51,513 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-18 20:19:51,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:19:51,513 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-18 20:19:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 20:19:51,514 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:51,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:19:51,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:19:51,515 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 20:19:51,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:51,515 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-08-18 20:19:51,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:51,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763560431] [2020-08-18 20:19:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:51,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:51,581 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 20:19:51,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763560431] [2020-08-18 20:19:51,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:51,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:19:51,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157735229] [2020-08-18 20:19:51,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:19:51,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:51,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:19:51,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:19:51,585 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-08-18 20:19:51,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:51,748 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-08-18 20:19:51,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:19:51,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-18 20:19:51,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:51,750 INFO L225 Difference]: With dead ends: 85 [2020-08-18 20:19:51,750 INFO L226 Difference]: Without dead ends: 83 [2020-08-18 20:19:51,751 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 20:19:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-18 20:19:51,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-18 20:19:51,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-18 20:19:51,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-08-18 20:19:51,764 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-08-18 20:19:51,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:51,764 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-08-18 20:19:51,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:19:51,764 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-08-18 20:19:51,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 20:19:51,765 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:51,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:19:51,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:19:51,766 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 20:19:51,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:51,766 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-08-18 20:19:51,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:51,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994733563] [2020-08-18 20:19:51,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:51,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:51,839 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 20:19:51,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994733563] [2020-08-18 20:19:51,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:51,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:19:51,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376433636] [2020-08-18 20:19:51,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:19:51,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:51,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:19:51,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:19:51,842 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-08-18 20:19:52,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:52,068 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-08-18 20:19:52,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 20:19:52,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 20:19:52,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:52,071 INFO L225 Difference]: With dead ends: 140 [2020-08-18 20:19:52,071 INFO L226 Difference]: Without dead ends: 138 [2020-08-18 20:19:52,072 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 20:19:52,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-18 20:19:52,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-08-18 20:19:52,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-18 20:19:52,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-18 20:19:52,082 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 14 [2020-08-18 20:19:52,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:52,083 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-18 20:19:52,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:19:52,083 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-18 20:19:52,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 20:19:52,084 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:52,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:19:52,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:19:52,085 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 20:19:52,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:52,085 INFO L82 PathProgramCache]: Analyzing trace with hash -646358176, now seen corresponding path program 1 times [2020-08-18 20:19:52,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:52,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071724163] [2020-08-18 20:19:52,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:52,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:52,173 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 20:19:52,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071724163] [2020-08-18 20:19:52,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:52,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:19:52,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434334696] [2020-08-18 20:19:52,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:19:52,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:52,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:19:52,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:19:52,178 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2020-08-18 20:19:52,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:52,369 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-08-18 20:19:52,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:19:52,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 20:19:52,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:52,371 INFO L225 Difference]: With dead ends: 85 [2020-08-18 20:19:52,371 INFO L226 Difference]: Without dead ends: 83 [2020-08-18 20:19:52,372 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 20:19:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-18 20:19:52,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-08-18 20:19:52,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-18 20:19:52,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-08-18 20:19:52,395 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-08-18 20:19:52,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:52,398 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-08-18 20:19:52,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:19:52,399 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-08-18 20:19:52,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 20:19:52,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:52,400 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 20:19:52,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:19:52,400 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 20:19:52,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:52,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-08-18 20:19:52,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:52,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267220699] [2020-08-18 20:19:52,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:52,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:52,484 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 20:19:52,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267220699] [2020-08-18 20:19:52,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:52,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:19:52,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636839914] [2020-08-18 20:19:52,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:19:52,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:52,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:19:52,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:19:52,487 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-08-18 20:19:52,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:52,659 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-08-18 20:19:52,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:19:52,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 20:19:52,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:52,661 INFO L225 Difference]: With dead ends: 83 [2020-08-18 20:19:52,661 INFO L226 Difference]: Without dead ends: 79 [2020-08-18 20:19:52,661 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 20:19:52,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-18 20:19:52,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-08-18 20:19:52,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 20:19:52,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-08-18 20:19:52,668 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-08-18 20:19:52,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:52,669 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-08-18 20:19:52,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:19:52,669 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-08-18 20:19:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 20:19:52,670 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:52,670 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 20:19:52,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:19:52,670 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 20:19:52,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:52,671 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-08-18 20:19:52,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:52,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586206725] [2020-08-18 20:19:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:52,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:52,729 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 20:19:52,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586206725] [2020-08-18 20:19:52,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:52,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:19:52,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754102395] [2020-08-18 20:19:52,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:19:52,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:52,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:19:52,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:19:52,731 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 6 states. [2020-08-18 20:19:52,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:52,906 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-08-18 20:19:52,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:19:52,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-18 20:19:52,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:52,908 INFO L225 Difference]: With dead ends: 136 [2020-08-18 20:19:52,908 INFO L226 Difference]: Without dead ends: 116 [2020-08-18 20:19:52,909 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 20:19:52,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-18 20:19:52,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-08-18 20:19:52,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-18 20:19:52,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-18 20:19:52,915 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-08-18 20:19:52,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:52,916 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-18 20:19:52,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:19:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-18 20:19:52,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 20:19:52,917 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:52,917 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 20:19:52,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:19:52,918 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 20:19:52,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:52,918 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-08-18 20:19:52,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:52,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701600074] [2020-08-18 20:19:52,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:52,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:52,966 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 20:19:52,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701600074] [2020-08-18 20:19:52,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:52,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:19:52,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716261761] [2020-08-18 20:19:52,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:19:52,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:52,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:19:52,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:19:52,968 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-08-18 20:19:53,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:53,089 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-08-18 20:19:53,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:19:53,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-18 20:19:53,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:53,091 INFO L225 Difference]: With dead ends: 141 [2020-08-18 20:19:53,091 INFO L226 Difference]: Without dead ends: 99 [2020-08-18 20:19:53,091 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 20:19:53,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-18 20:19:53,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-18 20:19:53,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 20:19:53,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 20:19:53,097 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 24 [2020-08-18 20:19:53,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:53,098 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 20:19:53,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:19:53,098 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 20:19:53,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 20:19:53,099 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:53,099 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 20:19:53,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:19:53,100 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 20:19:53,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:53,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-08-18 20:19:53,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:53,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219372834] [2020-08-18 20:19:53,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:53,136 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 20:19:53,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219372834] [2020-08-18 20:19:53,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:53,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:19:53,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404845766] [2020-08-18 20:19:53,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:19:53,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:53,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:19:53,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:19:53,139 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-18 20:19:53,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:53,255 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-08-18 20:19:53,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:19:53,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 20:19:53,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:53,257 INFO L225 Difference]: With dead ends: 78 [2020-08-18 20:19:53,257 INFO L226 Difference]: Without dead ends: 76 [2020-08-18 20:19:53,258 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 20:19:53,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-18 20:19:53,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-08-18 20:19:53,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 20:19:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-18 20:19:53,263 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 25 [2020-08-18 20:19:53,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:53,264 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-18 20:19:53,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:19:53,264 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-18 20:19:53,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 20:19:53,265 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:53,265 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 20:19:53,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:19:53,266 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 20:19:53,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:53,266 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-08-18 20:19:53,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:53,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851289474] [2020-08-18 20:19:53,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:53,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:53,337 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 20:19:53,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851289474] [2020-08-18 20:19:53,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:53,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:19:53,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545148260] [2020-08-18 20:19:53,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:19:53,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:53,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:19:53,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:19:53,343 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 5 states. [2020-08-18 20:19:53,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:53,546 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2020-08-18 20:19:53,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:19:53,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 20:19:53,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:53,548 INFO L225 Difference]: With dead ends: 194 [2020-08-18 20:19:53,548 INFO L226 Difference]: Without dead ends: 130 [2020-08-18 20:19:53,549 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 20:19:53,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-18 20:19:53,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2020-08-18 20:19:53,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 20:19:53,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 20:19:53,555 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 27 [2020-08-18 20:19:53,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:53,556 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 20:19:53,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:19:53,556 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 20:19:53,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 20:19:53,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:53,557 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 20:19:53,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:19:53,558 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 20:19:53,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:53,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-08-18 20:19:53,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:53,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024467134] [2020-08-18 20:19:53,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:53,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:53,609 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 20:19:53,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024467134] [2020-08-18 20:19:53,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:53,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:19:53,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267651593] [2020-08-18 20:19:53,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:19:53,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:53,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:19:53,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:19:53,611 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 5 states. [2020-08-18 20:19:53,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:53,751 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-08-18 20:19:53,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:19:53,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 20:19:53,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:53,753 INFO L225 Difference]: With dead ends: 79 [2020-08-18 20:19:53,753 INFO L226 Difference]: Without dead ends: 77 [2020-08-18 20:19:53,754 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 20:19:53,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-18 20:19:53,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-08-18 20:19:53,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 20:19:53,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-18 20:19:53,759 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 27 [2020-08-18 20:19:53,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:53,759 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-18 20:19:53,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:19:53,759 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-18 20:19:53,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 20:19:53,760 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:53,760 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 20:19:53,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:19:53,761 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 20:19:53,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:53,761 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-08-18 20:19:53,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:53,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994969549] [2020-08-18 20:19:53,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:53,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:53,886 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 20:19:53,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994969549] [2020-08-18 20:19:53,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:53,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:19:53,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599481989] [2020-08-18 20:19:53,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:19:53,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:53,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:19:53,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:19:53,889 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 6 states. [2020-08-18 20:19:54,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:54,230 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-08-18 20:19:54,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:19:54,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-18 20:19:54,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:54,232 INFO L225 Difference]: With dead ends: 182 [2020-08-18 20:19:54,232 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 20:19:54,233 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 20:19:54,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 20:19:54,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-08-18 20:19:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-18 20:19:54,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-08-18 20:19:54,243 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 28 [2020-08-18 20:19:54,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:54,243 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-08-18 20:19:54,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:19:54,243 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-08-18 20:19:54,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 20:19:54,244 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:54,244 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 20:19:54,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:19:54,245 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 20:19:54,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:54,245 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-08-18 20:19:54,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:54,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540332087] [2020-08-18 20:19:54,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:54,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:54,470 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 20:19:54,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540332087] [2020-08-18 20:19:54,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:54,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:19:54,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85793214] [2020-08-18 20:19:54,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:19:54,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:54,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:19:54,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:19:54,472 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 8 states. [2020-08-18 20:19:55,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:55,246 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2020-08-18 20:19:55,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:19:55,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-08-18 20:19:55,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:55,250 INFO L225 Difference]: With dead ends: 237 [2020-08-18 20:19:55,250 INFO L226 Difference]: Without dead ends: 235 [2020-08-18 20:19:55,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:19:55,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-18 20:19:55,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 98. [2020-08-18 20:19:55,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-18 20:19:55,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-08-18 20:19:55,260 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 28 [2020-08-18 20:19:55,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:55,261 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-08-18 20:19:55,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:19:55,261 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-08-18 20:19:55,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 20:19:55,262 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:55,262 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 20:19:55,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 20:19:55,263 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 20:19:55,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:55,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1932526751, now seen corresponding path program 1 times [2020-08-18 20:19:55,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:55,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523983100] [2020-08-18 20:19:55,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:55,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:55,330 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 20:19:55,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523983100] [2020-08-18 20:19:55,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:55,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:19:55,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535095202] [2020-08-18 20:19:55,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:19:55,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:55,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:19:55,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:19:55,334 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 5 states. [2020-08-18 20:19:55,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:55,553 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-08-18 20:19:55,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 20:19:55,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-18 20:19:55,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:55,555 INFO L225 Difference]: With dead ends: 145 [2020-08-18 20:19:55,556 INFO L226 Difference]: Without dead ends: 127 [2020-08-18 20:19:55,557 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 20:19:55,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-18 20:19:55,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-08-18 20:19:55,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 20:19:55,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2020-08-18 20:19:55,564 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 30 [2020-08-18 20:19:55,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:55,564 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2020-08-18 20:19:55,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:19:55,565 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2020-08-18 20:19:55,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 20:19:55,566 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:55,566 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 20:19:55,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 20:19:55,566 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 20:19:55,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:55,567 INFO L82 PathProgramCache]: Analyzing trace with hash -250794977, now seen corresponding path program 1 times [2020-08-18 20:19:55,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:55,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323805199] [2020-08-18 20:19:55,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:55,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:55,605 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 20:19:55,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323805199] [2020-08-18 20:19:55,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:55,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:19:55,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728429188] [2020-08-18 20:19:55,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:19:55,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:55,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:19:55,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:19:55,608 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand 4 states. [2020-08-18 20:19:55,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:55,750 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-08-18 20:19:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:19:55,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-18 20:19:55,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:55,752 INFO L225 Difference]: With dead ends: 119 [2020-08-18 20:19:55,752 INFO L226 Difference]: Without dead ends: 117 [2020-08-18 20:19:55,753 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 20:19:55,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-18 20:19:55,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-18 20:19:55,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-18 20:19:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2020-08-18 20:19:55,766 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 30 [2020-08-18 20:19:55,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:55,768 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2020-08-18 20:19:55,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:19:55,769 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2020-08-18 20:19:55,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-18 20:19:55,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:55,770 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 20:19:55,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 20:19:55,771 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 20:19:55,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:55,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-08-18 20:19:55,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:55,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646953263] [2020-08-18 20:19:55,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:56,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:56,036 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 20:19:56,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646953263] [2020-08-18 20:19:56,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:56,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:19:56,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620960634] [2020-08-18 20:19:56,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:19:56,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:56,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:19:56,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:19:56,038 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand 8 states. [2020-08-18 20:19:56,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:56,694 INFO L93 Difference]: Finished difference Result 240 states and 275 transitions. [2020-08-18 20:19:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:19:56,694 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-18 20:19:56,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:56,696 INFO L225 Difference]: With dead ends: 240 [2020-08-18 20:19:56,696 INFO L226 Difference]: Without dead ends: 238 [2020-08-18 20:19:56,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:19:56,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-18 20:19:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 120. [2020-08-18 20:19:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 20:19:56,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-08-18 20:19:56,706 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 31 [2020-08-18 20:19:56,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:56,707 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-08-18 20:19:56,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:19:56,707 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-08-18 20:19:56,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 20:19:56,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:56,708 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 20:19:56,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 20:19:56,709 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 20:19:56,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:56,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-08-18 20:19:56,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:56,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633264466] [2020-08-18 20:19:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:56,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:56,772 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 20:19:56,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633264466] [2020-08-18 20:19:56,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:19:56,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 20:19:56,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574589154] [2020-08-18 20:19:56,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:19:56,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:56,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:19:56,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:19:56,775 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 6 states. [2020-08-18 20:19:57,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:57,035 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2020-08-18 20:19:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:19:57,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 20:19:57,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:57,037 INFO L225 Difference]: With dead ends: 207 [2020-08-18 20:19:57,038 INFO L226 Difference]: Without dead ends: 145 [2020-08-18 20:19:57,039 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 20:19:57,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-18 20:19:57,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2020-08-18 20:19:57,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-18 20:19:57,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-08-18 20:19:57,047 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 33 [2020-08-18 20:19:57,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:57,048 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-08-18 20:19:57,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:19:57,048 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-08-18 20:19:57,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 20:19:57,049 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:57,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:19:57,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 20:19:57,049 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 20:19:57,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:57,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-08-18 20:19:57,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:57,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711923169] [2020-08-18 20:19:57,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:57,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:57,132 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 20:19:57,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711923169] [2020-08-18 20:19:57,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:57,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 20:19:57,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769985234] [2020-08-18 20:19:57,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:19:57,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:57,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:19:57,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:19:57,134 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 7 states. [2020-08-18 20:19:57,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:57,438 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-08-18 20:19:57,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:19:57,439 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-18 20:19:57,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:57,440 INFO L225 Difference]: With dead ends: 198 [2020-08-18 20:19:57,440 INFO L226 Difference]: Without dead ends: 178 [2020-08-18 20:19:57,441 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 20:19:57,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-18 20:19:57,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-08-18 20:19:57,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 20:19:57,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-08-18 20:19:57,450 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 33 [2020-08-18 20:19:57,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:57,450 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-08-18 20:19:57,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:19:57,450 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-08-18 20:19:57,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 20:19:57,451 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:57,451 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 20:19:57,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 20:19:57,452 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 20:19:57,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:57,452 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-08-18 20:19:57,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:57,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321995905] [2020-08-18 20:19:57,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:57,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:57,510 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 20:19:57,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321995905] [2020-08-18 20:19:57,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:57,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:19:57,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334488324] [2020-08-18 20:19:57,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:19:57,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:57,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:19:57,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:19:57,512 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 6 states. [2020-08-18 20:19:57,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:57,719 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2020-08-18 20:19:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 20:19:57,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 20:19:57,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:57,723 INFO L225 Difference]: With dead ends: 182 [2020-08-18 20:19:57,723 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 20:19:57,723 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 20:19:57,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 20:19:57,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2020-08-18 20:19:57,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-18 20:19:57,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2020-08-18 20:19:57,737 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 33 [2020-08-18 20:19:57,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:57,737 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2020-08-18 20:19:57,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:19:57,738 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2020-08-18 20:19:57,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 20:19:57,738 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:57,739 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 20:19:57,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 20:19:57,739 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 20:19:57,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:57,740 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-08-18 20:19:57,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:57,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427785560] [2020-08-18 20:19:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:57,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:57,825 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 20:19:57,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427785560] [2020-08-18 20:19:57,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:19:57,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 20:19:57,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963556498] [2020-08-18 20:19:57,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:19:57,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:57,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:19:57,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:19:57,828 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand 7 states. [2020-08-18 20:19:58,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:58,167 INFO L93 Difference]: Finished difference Result 241 states and 276 transitions. [2020-08-18 20:19:58,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:19:58,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-18 20:19:58,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:58,170 INFO L225 Difference]: With dead ends: 241 [2020-08-18 20:19:58,170 INFO L226 Difference]: Without dead ends: 210 [2020-08-18 20:19:58,171 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 20:19:58,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-18 20:19:58,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 169. [2020-08-18 20:19:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-18 20:19:58,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-08-18 20:19:58,183 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 36 [2020-08-18 20:19:58,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:58,183 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-08-18 20:19:58,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:19:58,183 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-08-18 20:19:58,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 20:19:58,184 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:58,184 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 20:19:58,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-18 20:19:58,186 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 20:19:58,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:58,186 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-08-18 20:19:58,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:58,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489454906] [2020-08-18 20:19:58,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:58,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:58,245 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 20:19:58,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489454906] [2020-08-18 20:19:58,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:58,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:19:58,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278904530] [2020-08-18 20:19:58,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:19:58,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:58,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:19:58,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:19:58,247 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 4 states. [2020-08-18 20:19:58,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:58,401 INFO L93 Difference]: Finished difference Result 354 states and 437 transitions. [2020-08-18 20:19:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:19:58,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-08-18 20:19:58,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:58,403 INFO L225 Difference]: With dead ends: 354 [2020-08-18 20:19:58,403 INFO L226 Difference]: Without dead ends: 258 [2020-08-18 20:19:58,404 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 20:19:58,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-18 20:19:58,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-18 20:19:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-18 20:19:58,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 262 transitions. [2020-08-18 20:19:58,417 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 262 transitions. Word has length 36 [2020-08-18 20:19:58,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:58,417 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 262 transitions. [2020-08-18 20:19:58,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:19:58,417 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 262 transitions. [2020-08-18 20:19:58,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 20:19:58,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:58,418 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 20:19:58,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-18 20:19:58,418 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 20:19:58,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:58,419 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-08-18 20:19:58,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:58,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719019142] [2020-08-18 20:19:58,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:58,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:58,670 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 20:19:58,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719019142] [2020-08-18 20:19:58,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:19:58,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 20:19:58,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841721272] [2020-08-18 20:19:58,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:19:58,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:58,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:19:58,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:19:58,672 INFO L87 Difference]: Start difference. First operand 218 states and 262 transitions. Second operand 10 states. [2020-08-18 20:19:59,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:59,462 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2020-08-18 20:19:59,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 20:19:59,462 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-18 20:19:59,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:59,464 INFO L225 Difference]: With dead ends: 430 [2020-08-18 20:19:59,465 INFO L226 Difference]: Without dead ends: 338 [2020-08-18 20:19:59,465 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 20:19:59,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-18 20:19:59,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 235. [2020-08-18 20:19:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-18 20:19:59,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 282 transitions. [2020-08-18 20:19:59,480 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 282 transitions. Word has length 40 [2020-08-18 20:19:59,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:59,481 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 282 transitions. [2020-08-18 20:19:59,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:19:59,481 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 282 transitions. [2020-08-18 20:19:59,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 20:19:59,482 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:59,482 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 20:19:59,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-18 20:19:59,482 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 20:19:59,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:59,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-08-18 20:19:59,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:59,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509049576] [2020-08-18 20:19:59,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:59,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:59,533 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 20:19:59,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509049576] [2020-08-18 20:19:59,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:59,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:19:59,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100500304] [2020-08-18 20:19:59,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:19:59,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:59,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:19:59,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:19:59,535 INFO L87 Difference]: Start difference. First operand 235 states and 282 transitions. Second operand 6 states. [2020-08-18 20:19:59,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:59,733 INFO L93 Difference]: Finished difference Result 353 states and 426 transitions. [2020-08-18 20:19:59,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 20:19:59,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-08-18 20:19:59,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:59,735 INFO L225 Difference]: With dead ends: 353 [2020-08-18 20:19:59,736 INFO L226 Difference]: Without dead ends: 244 [2020-08-18 20:19:59,736 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 20:19:59,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-18 20:19:59,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2020-08-18 20:19:59,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-18 20:19:59,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2020-08-18 20:19:59,749 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 40 [2020-08-18 20:19:59,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:59,749 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2020-08-18 20:19:59,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:19:59,750 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2020-08-18 20:19:59,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 20:19:59,750 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:59,751 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 20:19:59,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-18 20:19:59,751 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 20:19:59,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:59,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-08-18 20:19:59,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:59,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959494350] [2020-08-18 20:19:59,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:59,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:59,969 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 20:19:59,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959494350] [2020-08-18 20:19:59,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:19:59,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 20:19:59,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940421728] [2020-08-18 20:19:59,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:19:59,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:59,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:19:59,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:19:59,971 INFO L87 Difference]: Start difference. First operand 237 states and 284 transitions. Second operand 10 states. [2020-08-18 20:20:00,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:20:00,648 INFO L93 Difference]: Finished difference Result 441 states and 526 transitions. [2020-08-18 20:20:00,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 20:20:00,648 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-18 20:20:00,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:20:00,650 INFO L225 Difference]: With dead ends: 441 [2020-08-18 20:20:00,651 INFO L226 Difference]: Without dead ends: 349 [2020-08-18 20:20:00,651 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 20:20:00,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-18 20:20:00,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 239. [2020-08-18 20:20:00,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-18 20:20:00,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2020-08-18 20:20:00,666 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 40 [2020-08-18 20:20:00,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:20:00,667 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2020-08-18 20:20:00,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:20:00,667 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2020-08-18 20:20:00,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 20:20:00,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:20:00,668 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 20:20:00,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-18 20:20:00,668 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 20:20:00,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:20:00,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-08-18 20:20:00,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:20:00,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701180930] [2020-08-18 20:20:00,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:20:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:20:00,690 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:20:00,690 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:20:00,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-18 20:20:00,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:20:00 BoogieIcfgContainer [2020-08-18 20:20:00,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:20:00,747 INFO L168 Benchmark]: Toolchain (without parser) took 11421.53 ms. Allocated memory was 138.4 MB in the beginning and 353.9 MB in the end (delta: 215.5 MB). Free memory was 100.4 MB in the beginning and 229.3 MB in the end (delta: -128.9 MB). Peak memory consumption was 86.6 MB. Max. memory is 7.1 GB. [2020-08-18 20:20:00,747 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-18 20:20:00,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 622.97 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.2 MB in the beginning and 168.3 MB in the end (delta: -68.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-18 20:20:00,748 INFO L168 Benchmark]: Boogie Preprocessor took 71.97 ms. Allocated memory is still 201.9 MB. Free memory was 168.3 MB in the beginning and 164.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-08-18 20:20:00,750 INFO L168 Benchmark]: RCFGBuilder took 809.75 ms. Allocated memory is still 201.9 MB. Free memory was 164.8 MB in the beginning and 109.5 MB in the end (delta: 55.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2020-08-18 20:20:00,751 INFO L168 Benchmark]: TraceAbstraction took 9912.22 ms. Allocated memory was 201.9 MB in the beginning and 353.9 MB in the end (delta: 152.0 MB). Free memory was 108.8 MB in the beginning and 229.3 MB in the end (delta: -120.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. [2020-08-18 20:20:00,756 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 622.97 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.2 MB in the beginning and 168.3 MB in the end (delta: -68.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.97 ms. Allocated memory is still 201.9 MB. Free memory was 168.3 MB in the beginning and 164.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 809.75 ms. Allocated memory is still 201.9 MB. Free memory was 164.8 MB in the beginning and 109.5 MB in the end (delta: 55.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9912.22 ms. Allocated memory was 201.9 MB in the beginning and 353.9 MB in the end (delta: 152.0 MB). Free memory was 108.8 MB in the beginning and 229.3 MB in the end (delta: -120.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 89 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.8s, OverallIterations: 24, TraceHistogramMax: 2, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1788 SDtfs, 2214 SDslu, 3432 SDs, 0 SdLazy, 4020 SolverSat, 226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 892 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 157879 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 19 PerfectInterpolantSequences, 9/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...