/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 -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 16:18:19,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:18:19,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:18:19,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:18:19,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:18:19,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:18:19,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:18:19,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:18:19,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:18:19,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:18:19,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:18:20,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:18:20,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:18:20,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:18:20,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:18:20,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:18:20,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:18:20,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:18:20,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:18:20,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:18:20,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:18:20,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:18:20,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:18:20,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:18:20,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:18:20,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:18:20,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:18:20,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:18:20,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:18:20,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:18:20,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:18:20,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:18:20,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:18:20,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:18:20,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:18:20,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:18:20,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:18:20,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:18:20,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:18:20,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:18:20,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:18:20,048 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 16:18:20,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:18:20,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:18:20,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:18:20,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:18:20,081 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:18:20,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:18:20,081 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:18:20,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:18:20,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:18:20,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:18:20,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:18:20,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:18:20,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:18:20,082 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:18:20,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:18:20,083 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:18:20,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:18:20,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:18:20,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:18:20,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:18:20,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:18:20,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:18:20,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:18:20,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:18:20,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:18:20,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:18:20,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:18:20,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:18:20,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:18:20,085 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 [2020-08-18 16:18:20,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:18:20,398 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:18:20,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:18:20,404 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:18:20,404 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:18:20,405 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-18 16:18:20,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/114c3a399/494f8f85e117457aaa72c0308f274d2f/FLAG9a8e1462d [2020-08-18 16:18:21,027 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:18:21,028 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-18 16:18:21,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/114c3a399/494f8f85e117457aaa72c0308f274d2f/FLAG9a8e1462d [2020-08-18 16:18:21,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/114c3a399/494f8f85e117457aaa72c0308f274d2f [2020-08-18 16:18:21,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:18:21,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:18:21,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:18:21,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:18:21,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:18:21,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:18:21" (1/1) ... [2020-08-18 16:18:21,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d1cc6fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:21, skipping insertion in model container [2020-08-18 16:18:21,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:18:21" (1/1) ... [2020-08-18 16:18:21,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:18:21,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:18:21,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:18:21,879 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:18:21,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:18:21,992 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:18:21,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:21 WrapperNode [2020-08-18 16:18:21,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:18:21,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:18:21,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:18:21,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:18:22,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:21" (1/1) ... [2020-08-18 16:18:22,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:21" (1/1) ... [2020-08-18 16:18:22,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:21" (1/1) ... [2020-08-18 16:18:22,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:21" (1/1) ... [2020-08-18 16:18:22,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:21" (1/1) ... [2020-08-18 16:18:22,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:21" (1/1) ... [2020-08-18 16:18:22,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:21" (1/1) ... [2020-08-18 16:18:22,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:18:22,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:18:22,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:18:22,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:18:22,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:21" (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 16:18:22,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:18:22,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:18:22,160 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:18:22,160 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 16:18:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 16:18:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 16:18:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 16:18:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 16:18:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 16:18:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 16:18:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 16:18:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 16:18:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 16:18:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 16:18:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 16:18:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 16:18:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 16:18:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 16:18:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 16:18:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 16:18:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 16:18:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 16:18:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 16:18:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 16:18:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 16:18:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 16:18:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 16:18:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 16:18:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 16:18:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 16:18:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 16:18:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 16:18:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 16:18:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 16:18:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 16:18:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 16:18:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 16:18:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 16:18:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 16:18:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 16:18:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 16:18:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 16:18:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 16:18:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 16:18:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 16:18:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 16:18:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 16:18:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 16:18:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 16:18:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 16:18:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 16:18:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 16:18:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 16:18:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:18:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 16:18:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 16:18:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:18:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 16:18:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 16:18:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 16:18:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 16:18:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 16:18:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 16:18:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 16:18:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 16:18:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 16:18:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 16:18:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 16:18:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 16:18:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 16:18:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 16:18:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 16:18:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 16:18:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 16:18:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 16:18:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 16:18:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 16:18:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 16:18:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 16:18:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 16:18:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 16:18:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 16:18:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 16:18:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 16:18:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 16:18:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 16:18:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 16:18:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 16:18:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 16:18:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 16:18:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 16:18:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 16:18:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 16:18:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 16:18:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 16:18:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 16:18:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 16:18:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 16:18:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 16:18:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 16:18:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 16:18:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 16:18:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 16:18:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 16:18:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 16:18:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 16:18:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:18:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:18:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:18:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:18:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:18:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:18:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:18:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:18:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:18:22,850 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:18:22,850 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-18 16:18:22,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:18:22 BoogieIcfgContainer [2020-08-18 16:18:22,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:18:22,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:18:22,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:18:22,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:18:22,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:18:21" (1/3) ... [2020-08-18 16:18:22,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e2e430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:18:22, skipping insertion in model container [2020-08-18 16:18:22,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:21" (2/3) ... [2020-08-18 16:18:22,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e2e430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:18:22, skipping insertion in model container [2020-08-18 16:18:22,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:18:22" (3/3) ... [2020-08-18 16:18:22,871 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-08-18 16:18:22,881 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:18:22,889 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-18 16:18:22,902 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-18 16:18:22,926 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:18:22,926 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:18:22,927 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:18:22,927 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:18:22,928 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:18:22,928 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:18:22,928 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:18:22,929 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:18:22,951 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-08-18 16:18:22,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-18 16:18:22,957 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:22,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:18:22,959 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 16:18:22,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:22,965 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-08-18 16:18:22,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:22,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785905061] [2020-08-18 16:18:22,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:23,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:23,202 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 16:18:23,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785905061] [2020-08-18 16:18:23,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:23,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:18:23,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772776661] [2020-08-18 16:18:23,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:18:23,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:23,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:18:23,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:18:23,239 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-08-18 16:18:23,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:23,515 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-08-18 16:18:23,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:18:23,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-18 16:18:23,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:23,530 INFO L225 Difference]: With dead ends: 188 [2020-08-18 16:18:23,530 INFO L226 Difference]: Without dead ends: 100 [2020-08-18 16:18:23,534 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 16:18:23,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-18 16:18:23,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-08-18 16:18:23,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-18 16:18:23,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-18 16:18:23,581 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-08-18 16:18:23,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:23,582 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-18 16:18:23,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:18:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-18 16:18:23,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 16:18:23,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:23,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:18:23,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:18:23,584 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 16:18:23,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:23,584 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-08-18 16:18:23,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:23,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550853574] [2020-08-18 16:18:23,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:23,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:18:23,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550853574] [2020-08-18 16:18:23,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:23,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:18:23,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56776375] [2020-08-18 16:18:23,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:18:23,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:23,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:18:23,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:18:23,652 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-08-18 16:18:23,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:23,812 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-08-18 16:18:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:18:23,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-18 16:18:23,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:23,815 INFO L225 Difference]: With dead ends: 85 [2020-08-18 16:18:23,815 INFO L226 Difference]: Without dead ends: 83 [2020-08-18 16:18:23,816 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 16:18:23,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-18 16:18:23,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-18 16:18:23,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-18 16:18:23,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-08-18 16:18:23,827 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-08-18 16:18:23,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:23,828 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-08-18 16:18:23,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:18:23,828 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-08-18 16:18:23,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 16:18:23,829 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:23,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:18:23,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:18:23,829 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:18:23,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:23,830 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-08-18 16:18:23,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:23,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976938171] [2020-08-18 16:18:23,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:23,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:23,946 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 16:18:23,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976938171] [2020-08-18 16:18:23,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:23,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:18:23,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881089716] [2020-08-18 16:18:23,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:18:23,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:23,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:18:23,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:18:23,951 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-08-18 16:18:24,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:24,251 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-08-18 16:18:24,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 16:18:24,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 16:18:24,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:24,255 INFO L225 Difference]: With dead ends: 140 [2020-08-18 16:18:24,255 INFO L226 Difference]: Without dead ends: 138 [2020-08-18 16:18:24,256 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 16:18:24,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-18 16:18:24,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-08-18 16:18:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-18 16:18:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-18 16:18:24,280 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 14 [2020-08-18 16:18:24,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:24,280 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-18 16:18:24,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:18:24,280 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-18 16:18:24,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 16:18:24,282 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:24,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:18:24,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:18:24,286 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 16:18:24,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:24,286 INFO L82 PathProgramCache]: Analyzing trace with hash -646358176, now seen corresponding path program 1 times [2020-08-18 16:18:24,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:24,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523361973] [2020-08-18 16:18:24,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:24,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:24,420 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 16:18:24,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523361973] [2020-08-18 16:18:24,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:24,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:18:24,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559217801] [2020-08-18 16:18:24,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:18:24,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:24,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:18:24,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:18:24,425 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2020-08-18 16:18:24,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:24,616 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-08-18 16:18:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:18:24,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 16:18:24,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:24,617 INFO L225 Difference]: With dead ends: 85 [2020-08-18 16:18:24,617 INFO L226 Difference]: Without dead ends: 83 [2020-08-18 16:18:24,619 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 16:18:24,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-18 16:18:24,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-08-18 16:18:24,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-18 16:18:24,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-08-18 16:18:24,627 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-08-18 16:18:24,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:24,627 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-08-18 16:18:24,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:18:24,628 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-08-18 16:18:24,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 16:18:24,628 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:24,628 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 16:18:24,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:18:24,629 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 16:18:24,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:24,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-08-18 16:18:24,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:24,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682206822] [2020-08-18 16:18:24,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:24,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:24,718 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 16:18:24,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682206822] [2020-08-18 16:18:24,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:24,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:18:24,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524660934] [2020-08-18 16:18:24,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:18:24,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:24,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:18:24,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:18:24,721 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-08-18 16:18:24,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:24,860 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-08-18 16:18:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:18:24,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 16:18:24,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:24,862 INFO L225 Difference]: With dead ends: 83 [2020-08-18 16:18:24,862 INFO L226 Difference]: Without dead ends: 79 [2020-08-18 16:18:24,863 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 16:18:24,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-18 16:18:24,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-08-18 16:18:24,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 16:18:24,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-08-18 16:18:24,869 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-08-18 16:18:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:24,870 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-08-18 16:18:24,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:18:24,870 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-08-18 16:18:24,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 16:18:24,871 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:24,871 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 16:18:24,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:18:24,871 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 16:18:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:24,872 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-08-18 16:18:24,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:24,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838735900] [2020-08-18 16:18:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:24,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:24,926 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 16:18:24,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838735900] [2020-08-18 16:18:24,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:24,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:18:24,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339887766] [2020-08-18 16:18:24,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:18:24,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:24,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:18:24,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:18:24,929 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 6 states. [2020-08-18 16:18:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:25,121 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-08-18 16:18:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:18:25,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-18 16:18:25,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:25,124 INFO L225 Difference]: With dead ends: 136 [2020-08-18 16:18:25,124 INFO L226 Difference]: Without dead ends: 116 [2020-08-18 16:18:25,126 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 16:18:25,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-18 16:18:25,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-08-18 16:18:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-18 16:18:25,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-18 16:18:25,142 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-08-18 16:18:25,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:25,143 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-18 16:18:25,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:18:25,144 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-18 16:18:25,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 16:18:25,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:25,145 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 16:18:25,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:18:25,146 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 16:18:25,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:25,146 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-08-18 16:18:25,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:25,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546302428] [2020-08-18 16:18:25,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:25,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:25,200 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 16:18:25,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546302428] [2020-08-18 16:18:25,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:25,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:18:25,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708475519] [2020-08-18 16:18:25,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:18:25,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:25,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:18:25,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:18:25,202 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-08-18 16:18:25,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:25,317 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-08-18 16:18:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:18:25,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-18 16:18:25,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:25,318 INFO L225 Difference]: With dead ends: 141 [2020-08-18 16:18:25,318 INFO L226 Difference]: Without dead ends: 99 [2020-08-18 16:18:25,319 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 16:18:25,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-18 16:18:25,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-18 16:18:25,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 16:18:25,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 16:18:25,326 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 24 [2020-08-18 16:18:25,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:25,326 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 16:18:25,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:18:25,326 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 16:18:25,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 16:18:25,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:25,327 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 16:18:25,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:18:25,328 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 16:18:25,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:25,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-08-18 16:18:25,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:25,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282080243] [2020-08-18 16:18:25,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:25,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:25,361 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 16:18:25,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282080243] [2020-08-18 16:18:25,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:25,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:18:25,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847212530] [2020-08-18 16:18:25,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:18:25,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:25,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:18:25,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:18:25,364 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-18 16:18:25,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:25,475 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-08-18 16:18:25,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:18:25,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 16:18:25,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:25,476 INFO L225 Difference]: With dead ends: 78 [2020-08-18 16:18:25,476 INFO L226 Difference]: Without dead ends: 76 [2020-08-18 16:18:25,477 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 16:18:25,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-18 16:18:25,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-08-18 16:18:25,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 16:18:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-18 16:18:25,483 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 25 [2020-08-18 16:18:25,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:25,483 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-18 16:18:25,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:18:25,483 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-18 16:18:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 16:18:25,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:25,484 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 16:18:25,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:18:25,485 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 16:18:25,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:25,485 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-08-18 16:18:25,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:25,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725031774] [2020-08-18 16:18:25,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:25,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:25,530 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 16:18:25,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725031774] [2020-08-18 16:18:25,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:25,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:18:25,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130884276] [2020-08-18 16:18:25,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:18:25,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:25,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:18:25,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:18:25,533 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 5 states. [2020-08-18 16:18:25,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:25,751 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2020-08-18 16:18:25,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:18:25,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 16:18:25,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:25,753 INFO L225 Difference]: With dead ends: 194 [2020-08-18 16:18:25,753 INFO L226 Difference]: Without dead ends: 130 [2020-08-18 16:18:25,755 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 16:18:25,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-18 16:18:25,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2020-08-18 16:18:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 16:18:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 16:18:25,768 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 27 [2020-08-18 16:18:25,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:25,772 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 16:18:25,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:18:25,772 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 16:18:25,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 16:18:25,773 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:25,773 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 16:18:25,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:18:25,774 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 16:18:25,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:25,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-08-18 16:18:25,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:25,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272065131] [2020-08-18 16:18:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:25,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:25,823 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 16:18:25,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272065131] [2020-08-18 16:18:25,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:25,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:18:25,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485576018] [2020-08-18 16:18:25,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:18:25,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:25,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:18:25,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:18:25,825 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 5 states. [2020-08-18 16:18:25,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:25,962 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-08-18 16:18:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:18:25,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 16:18:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:25,963 INFO L225 Difference]: With dead ends: 79 [2020-08-18 16:18:25,964 INFO L226 Difference]: Without dead ends: 77 [2020-08-18 16:18:25,964 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 16:18:25,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-18 16:18:25,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-08-18 16:18:25,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 16:18:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-18 16:18:25,969 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 27 [2020-08-18 16:18:25,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:25,969 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-18 16:18:25,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:18:25,970 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-18 16:18:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 16:18:25,971 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:25,971 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 16:18:25,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:18:25,971 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 16:18:25,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:25,972 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-08-18 16:18:25,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:25,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149037972] [2020-08-18 16:18:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:26,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:26,035 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 16:18:26,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149037972] [2020-08-18 16:18:26,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:26,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:18:26,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100492742] [2020-08-18 16:18:26,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:18:26,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:26,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:18:26,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:18:26,038 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 6 states. [2020-08-18 16:18:26,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:26,345 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-08-18 16:18:26,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:18:26,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-18 16:18:26,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:26,348 INFO L225 Difference]: With dead ends: 182 [2020-08-18 16:18:26,348 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 16:18:26,349 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 16:18:26,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 16:18:26,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-08-18 16:18:26,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-18 16:18:26,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-08-18 16:18:26,361 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 28 [2020-08-18 16:18:26,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:26,361 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-08-18 16:18:26,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:18:26,361 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-08-18 16:18:26,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 16:18:26,362 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:26,362 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 16:18:26,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:18:26,363 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 16:18:26,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:26,363 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-08-18 16:18:26,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:26,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299887665] [2020-08-18 16:18:26,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:26,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:18:26,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299887665] [2020-08-18 16:18:26,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:26,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:18:26,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988813586] [2020-08-18 16:18:26,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:18:26,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:26,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:18:26,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:18:26,620 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 8 states. [2020-08-18 16:18:27,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:27,375 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2020-08-18 16:18:27,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:18:27,375 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-08-18 16:18:27,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:27,378 INFO L225 Difference]: With dead ends: 237 [2020-08-18 16:18:27,379 INFO L226 Difference]: Without dead ends: 235 [2020-08-18 16:18:27,380 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 16:18:27,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-18 16:18:27,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 98. [2020-08-18 16:18:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-18 16:18:27,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-08-18 16:18:27,392 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 28 [2020-08-18 16:18:27,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:27,394 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-08-18 16:18:27,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:18:27,394 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-08-18 16:18:27,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 16:18:27,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:27,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:18:27,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 16:18:27,401 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 16:18:27,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:27,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1932526751, now seen corresponding path program 1 times [2020-08-18 16:18:27,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:27,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205297535] [2020-08-18 16:18:27,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:27,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:27,483 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 16:18:27,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205297535] [2020-08-18 16:18:27,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:27,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:18:27,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103399903] [2020-08-18 16:18:27,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:18:27,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:27,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:18:27,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:18:27,485 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 5 states. [2020-08-18 16:18:27,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:27,695 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-08-18 16:18:27,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 16:18:27,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-18 16:18:27,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:27,696 INFO L225 Difference]: With dead ends: 145 [2020-08-18 16:18:27,697 INFO L226 Difference]: Without dead ends: 127 [2020-08-18 16:18:27,697 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 16:18:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-18 16:18:27,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-08-18 16:18:27,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 16:18:27,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2020-08-18 16:18:27,704 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 30 [2020-08-18 16:18:27,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:27,704 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2020-08-18 16:18:27,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:18:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2020-08-18 16:18:27,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 16:18:27,705 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:27,706 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 16:18:27,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 16:18:27,706 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 16:18:27,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:27,706 INFO L82 PathProgramCache]: Analyzing trace with hash -250794977, now seen corresponding path program 1 times [2020-08-18 16:18:27,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:27,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557988046] [2020-08-18 16:18:27,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:27,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:27,742 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 16:18:27,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557988046] [2020-08-18 16:18:27,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:27,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:18:27,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215057130] [2020-08-18 16:18:27,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:18:27,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:27,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:18:27,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:18:27,745 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand 4 states. [2020-08-18 16:18:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:27,904 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-08-18 16:18:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:18:27,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-18 16:18:27,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:27,905 INFO L225 Difference]: With dead ends: 119 [2020-08-18 16:18:27,905 INFO L226 Difference]: Without dead ends: 117 [2020-08-18 16:18:27,906 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 16:18:27,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-18 16:18:27,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-18 16:18:27,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-18 16:18:27,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2020-08-18 16:18:27,917 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 30 [2020-08-18 16:18:27,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:27,917 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2020-08-18 16:18:27,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:18:27,917 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2020-08-18 16:18:27,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-18 16:18:27,918 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:27,919 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 16:18:27,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 16:18:27,919 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 16:18:27,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:27,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-08-18 16:18:27,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:27,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368150103] [2020-08-18 16:18:27,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:28,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:28,081 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 16:18:28,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368150103] [2020-08-18 16:18:28,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:28,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:18:28,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019672797] [2020-08-18 16:18:28,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:18:28,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:28,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:18:28,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:18:28,084 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand 8 states. [2020-08-18 16:18:28,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:28,665 INFO L93 Difference]: Finished difference Result 240 states and 275 transitions. [2020-08-18 16:18:28,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:18:28,665 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-18 16:18:28,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:28,667 INFO L225 Difference]: With dead ends: 240 [2020-08-18 16:18:28,667 INFO L226 Difference]: Without dead ends: 238 [2020-08-18 16:18:28,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:18:28,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-18 16:18:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 120. [2020-08-18 16:18:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 16:18:28,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-08-18 16:18:28,677 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 31 [2020-08-18 16:18:28,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:28,677 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-08-18 16:18:28,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:18:28,677 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-08-18 16:18:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 16:18:28,678 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:28,678 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 16:18:28,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 16:18:28,678 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 16:18:28,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:28,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-08-18 16:18:28,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:28,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913259308] [2020-08-18 16:18:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:28,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:28,757 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 16:18:28,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913259308] [2020-08-18 16:18:28,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:18:28,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 16:18:28,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740530735] [2020-08-18 16:18:28,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:18:28,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:28,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:18:28,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:18:28,761 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 6 states. [2020-08-18 16:18:29,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:29,049 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2020-08-18 16:18:29,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:18:29,050 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 16:18:29,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:29,051 INFO L225 Difference]: With dead ends: 207 [2020-08-18 16:18:29,052 INFO L226 Difference]: Without dead ends: 145 [2020-08-18 16:18:29,052 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 16:18:29,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-18 16:18:29,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2020-08-18 16:18:29,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-18 16:18:29,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-08-18 16:18:29,064 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 33 [2020-08-18 16:18:29,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:29,064 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-08-18 16:18:29,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:18:29,064 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-08-18 16:18:29,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 16:18:29,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:29,066 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 16:18:29,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 16:18:29,066 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 16:18:29,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:29,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-08-18 16:18:29,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:29,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617295572] [2020-08-18 16:18:29,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:29,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:29,150 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 16:18:29,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617295572] [2020-08-18 16:18:29,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:29,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:18:29,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308212626] [2020-08-18 16:18:29,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:18:29,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:29,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:18:29,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:18:29,152 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 7 states. [2020-08-18 16:18:29,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:29,462 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-08-18 16:18:29,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:18:29,463 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-18 16:18:29,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:29,464 INFO L225 Difference]: With dead ends: 198 [2020-08-18 16:18:29,464 INFO L226 Difference]: Without dead ends: 178 [2020-08-18 16:18:29,465 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 16:18:29,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-18 16:18:29,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-08-18 16:18:29,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 16:18:29,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-08-18 16:18:29,475 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 33 [2020-08-18 16:18:29,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:29,476 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-08-18 16:18:29,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:18:29,476 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-08-18 16:18:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 16:18:29,477 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:29,477 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 16:18:29,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 16:18:29,477 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 16:18:29,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:29,478 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-08-18 16:18:29,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:29,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610612171] [2020-08-18 16:18:29,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:29,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:29,544 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 16:18:29,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610612171] [2020-08-18 16:18:29,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:29,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:18:29,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259195410] [2020-08-18 16:18:29,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:18:29,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:29,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:18:29,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:18:29,552 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 6 states. [2020-08-18 16:18:29,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:29,768 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2020-08-18 16:18:29,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:18:29,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 16:18:29,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:29,770 INFO L225 Difference]: With dead ends: 182 [2020-08-18 16:18:29,771 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 16:18:29,771 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 16:18:29,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 16:18:29,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2020-08-18 16:18:29,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-18 16:18:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2020-08-18 16:18:29,788 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 33 [2020-08-18 16:18:29,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:29,789 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2020-08-18 16:18:29,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:18:29,789 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2020-08-18 16:18:29,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 16:18:29,790 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:29,790 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 16:18:29,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 16:18:29,790 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 16:18:29,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:29,791 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-08-18 16:18:29,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:29,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242869070] [2020-08-18 16:18:29,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:29,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:29,882 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 16:18:29,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242869070] [2020-08-18 16:18:29,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:18:29,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 16:18:29,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411562792] [2020-08-18 16:18:29,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:18:29,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:29,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:18:29,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:18:29,886 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand 7 states. [2020-08-18 16:18:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:30,231 INFO L93 Difference]: Finished difference Result 241 states and 276 transitions. [2020-08-18 16:18:30,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:18:30,231 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-18 16:18:30,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:30,233 INFO L225 Difference]: With dead ends: 241 [2020-08-18 16:18:30,233 INFO L226 Difference]: Without dead ends: 210 [2020-08-18 16:18:30,234 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 16:18:30,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-18 16:18:30,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 169. [2020-08-18 16:18:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-18 16:18:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-08-18 16:18:30,261 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 36 [2020-08-18 16:18:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:30,262 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-08-18 16:18:30,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:18:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-08-18 16:18:30,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 16:18:30,263 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:30,263 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 16:18:30,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-18 16:18:30,263 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 16:18:30,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:30,264 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-08-18 16:18:30,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:30,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219522167] [2020-08-18 16:18:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:30,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:30,294 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 16:18:30,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219522167] [2020-08-18 16:18:30,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:30,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:18:30,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063969646] [2020-08-18 16:18:30,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:18:30,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:30,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:18:30,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:18:30,296 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 4 states. [2020-08-18 16:18:30,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:30,438 INFO L93 Difference]: Finished difference Result 354 states and 437 transitions. [2020-08-18 16:18:30,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:18:30,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-08-18 16:18:30,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:30,440 INFO L225 Difference]: With dead ends: 354 [2020-08-18 16:18:30,440 INFO L226 Difference]: Without dead ends: 258 [2020-08-18 16:18:30,441 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 16:18:30,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-18 16:18:30,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-18 16:18:30,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-18 16:18:30,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 262 transitions. [2020-08-18 16:18:30,455 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 262 transitions. Word has length 36 [2020-08-18 16:18:30,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:30,455 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 262 transitions. [2020-08-18 16:18:30,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:18:30,456 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 262 transitions. [2020-08-18 16:18:30,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 16:18:30,456 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:30,456 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:18:30,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-18 16:18:30,457 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:18:30,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:30,457 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-08-18 16:18:30,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:30,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311633597] [2020-08-18 16:18:30,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:30,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:30,719 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 16:18:30,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311633597] [2020-08-18 16:18:30,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:18:30,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 16:18:30,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682767215] [2020-08-18 16:18:30,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:18:30,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:30,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:18:30,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:18:30,721 INFO L87 Difference]: Start difference. First operand 218 states and 262 transitions. Second operand 10 states. [2020-08-18 16:18:31,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:31,508 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2020-08-18 16:18:31,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:18:31,509 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-18 16:18:31,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:31,511 INFO L225 Difference]: With dead ends: 430 [2020-08-18 16:18:31,511 INFO L226 Difference]: Without dead ends: 338 [2020-08-18 16:18:31,512 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 16:18:31,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-18 16:18:31,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 235. [2020-08-18 16:18:31,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-18 16:18:31,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 282 transitions. [2020-08-18 16:18:31,529 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 282 transitions. Word has length 40 [2020-08-18 16:18:31,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:31,529 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 282 transitions. [2020-08-18 16:18:31,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:18:31,529 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 282 transitions. [2020-08-18 16:18:31,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 16:18:31,530 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:31,530 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 16:18:31,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-18 16:18:31,531 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 16:18:31,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:31,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-08-18 16:18:31,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:31,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322772593] [2020-08-18 16:18:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:31,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:31,613 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 16:18:31,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322772593] [2020-08-18 16:18:31,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:31,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:18:31,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036731178] [2020-08-18 16:18:31,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:18:31,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:31,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:18:31,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:18:31,615 INFO L87 Difference]: Start difference. First operand 235 states and 282 transitions. Second operand 6 states. [2020-08-18 16:18:31,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:31,824 INFO L93 Difference]: Finished difference Result 353 states and 426 transitions. [2020-08-18 16:18:31,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:18:31,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-08-18 16:18:31,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:31,828 INFO L225 Difference]: With dead ends: 353 [2020-08-18 16:18:31,828 INFO L226 Difference]: Without dead ends: 244 [2020-08-18 16:18:31,829 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 16:18:31,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-18 16:18:31,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2020-08-18 16:18:31,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-18 16:18:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2020-08-18 16:18:31,842 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 40 [2020-08-18 16:18:31,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:31,843 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2020-08-18 16:18:31,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:18:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2020-08-18 16:18:31,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 16:18:31,844 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:31,844 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 16:18:31,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-18 16:18:31,844 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 16:18:31,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:31,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-08-18 16:18:31,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:31,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581791118] [2020-08-18 16:18:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:32,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:32,128 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 16:18:32,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581791118] [2020-08-18 16:18:32,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:18:32,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 16:18:32,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485870431] [2020-08-18 16:18:32,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:18:32,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:32,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:18:32,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:18:32,131 INFO L87 Difference]: Start difference. First operand 237 states and 284 transitions. Second operand 10 states. [2020-08-18 16:18:32,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:32,832 INFO L93 Difference]: Finished difference Result 441 states and 526 transitions. [2020-08-18 16:18:32,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 16:18:32,832 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-18 16:18:32,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:32,835 INFO L225 Difference]: With dead ends: 441 [2020-08-18 16:18:32,835 INFO L226 Difference]: Without dead ends: 349 [2020-08-18 16:18:32,836 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 16:18:32,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-18 16:18:32,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 239. [2020-08-18 16:18:32,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-18 16:18:32,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2020-08-18 16:18:32,850 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 40 [2020-08-18 16:18:32,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:32,850 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2020-08-18 16:18:32,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:18:32,850 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2020-08-18 16:18:32,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 16:18:32,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:32,851 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 16:18:32,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-18 16:18:32,851 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 16:18:32,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:32,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-08-18 16:18:32,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:32,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747779209] [2020-08-18 16:18:32,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:18:32,865 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:18:32,866 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:18:32,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-18 16:18:32,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:18:32 BoogieIcfgContainer [2020-08-18 16:18:32,903 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:18:32,905 INFO L168 Benchmark]: Toolchain (without parser) took 11541.41 ms. Allocated memory was 147.3 MB in the beginning and 336.1 MB in the end (delta: 188.7 MB). Free memory was 102.2 MB in the beginning and 119.2 MB in the end (delta: -17.1 MB). Peak memory consumption was 171.7 MB. Max. memory is 7.1 GB. [2020-08-18 16:18:32,910 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 16:18:32,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.17 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 102.0 MB in the beginning and 169.6 MB in the end (delta: -67.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-08-18 16:18:32,911 INFO L168 Benchmark]: Boogie Preprocessor took 105.82 ms. Allocated memory is still 203.9 MB. Free memory was 169.6 MB in the beginning and 166.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-08-18 16:18:32,912 INFO L168 Benchmark]: RCFGBuilder took 760.56 ms. Allocated memory is still 203.9 MB. Free memory was 166.2 MB in the beginning and 110.7 MB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2020-08-18 16:18:32,912 INFO L168 Benchmark]: TraceAbstraction took 10040.30 ms. Allocated memory was 203.9 MB in the beginning and 336.1 MB in the end (delta: 132.1 MB). Free memory was 110.0 MB in the beginning and 119.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 122.9 MB. Max. memory is 7.1 GB. [2020-08-18 16:18:32,917 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 629.17 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 102.0 MB in the beginning and 169.6 MB in the end (delta: -67.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.82 ms. Allocated memory is still 203.9 MB. Free memory was 169.6 MB in the beginning and 166.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 760.56 ms. Allocated memory is still 203.9 MB. Free memory was 166.2 MB in the beginning and 110.7 MB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10040.30 ms. Allocated memory was 203.9 MB in the beginning and 336.1 MB in the end (delta: 132.1 MB). Free memory was 110.0 MB in the beginning and 119.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 122.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 89 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.9s, OverallIterations: 24, TraceHistogramMax: 2, AutomataDifference: 6.9s, 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, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 157879 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 19 PerfectInterpolantSequences, 9/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...