/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/forester-heap/dll-queue-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:50:07,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:50:07,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:50:07,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:50:07,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:50:07,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:50:07,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:50:07,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:50:07,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:50:07,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:50:07,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:50:07,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:50:07,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:50:07,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:50:07,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:50:07,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:50:07,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:50:07,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:50:07,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:50:07,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:50:07,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:50:07,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:50:07,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:50:07,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:50:08,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:50:08,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:50:08,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:50:08,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:50:08,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:50:08,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:50:08,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:50:08,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:50:08,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:50:08,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:50:08,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:50:08,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:50:08,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:50:08,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:50:08,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:50:08,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:50:08,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:50:08,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 22:50:08,045 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:50:08,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:50:08,045 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:50:08,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:50:08,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:50:08,047 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:50:08,047 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:50:08,047 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:50:08,047 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:50:08,047 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:50:08,048 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:50:08,048 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:50:08,048 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:50:08,048 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:50:08,048 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:50:08,048 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:50:08,048 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:50:08,049 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:50:08,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:50:08,049 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:50:08,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:50:08,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:50:08,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:50:08,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:50:08,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:50:08,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:50:08,050 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:50:08,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:50:08,050 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:50:08,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:50:08,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:50:08,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:50:08,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:50:08,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:50:08,051 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:50:08,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:50:08,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:50:08,052 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:50:08,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:50:08,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:50:08,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:50:08,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:50:08,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:50:08,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:50:08,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:50:08,321 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:50:08,321 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:50:08,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-queue-2.i [2023-03-31 22:50:09,434 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:50:09,629 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:50:09,629 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i [2023-03-31 22:50:09,645 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e0bb07ec/ab65b71287c440fcaeac31c78769dd77/FLAG7fba72165 [2023-03-31 22:50:09,658 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e0bb07ec/ab65b71287c440fcaeac31c78769dd77 [2023-03-31 22:50:09,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:50:09,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:50:09,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:50:09,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:50:09,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:50:09,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:50:09" (1/1) ... [2023-03-31 22:50:09,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b21972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:09, skipping insertion in model container [2023-03-31 22:50:09,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:50:09" (1/1) ... [2023-03-31 22:50:09,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:50:09,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:50:09,973 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[22460,22473] [2023-03-31 22:50:09,978 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[22531,22544] [2023-03-31 22:50:09,979 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[22605,22618] [2023-03-31 22:50:09,980 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[22697,22710] [2023-03-31 22:50:09,980 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[22774,22787] [2023-03-31 22:50:09,981 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[22869,22882] [2023-03-31 22:50:09,982 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[22946,22959] [2023-03-31 22:50:09,982 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[23029,23042] [2023-03-31 22:50:09,983 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[23124,23137] [2023-03-31 22:50:09,984 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[23201,23214] [2023-03-31 22:50:09,985 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[23284,23297] [2023-03-31 22:50:09,985 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[23373,23386] [2023-03-31 22:50:09,986 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[23459,23472] [2023-03-31 22:50:09,988 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[23604,23617] [2023-03-31 22:50:09,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:50:09,999 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:50:10,040 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[22460,22473] [2023-03-31 22:50:10,041 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[22531,22544] [2023-03-31 22:50:10,042 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[22605,22618] [2023-03-31 22:50:10,042 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[22697,22710] [2023-03-31 22:50:10,043 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[22774,22787] [2023-03-31 22:50:10,044 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[22869,22882] [2023-03-31 22:50:10,044 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[22946,22959] [2023-03-31 22:50:10,045 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[23029,23042] [2023-03-31 22:50:10,046 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[23124,23137] [2023-03-31 22:50:10,047 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[23201,23214] [2023-03-31 22:50:10,048 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[23284,23297] [2023-03-31 22:50:10,057 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[23373,23386] [2023-03-31 22:50:10,058 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[23459,23472] [2023-03-31 22:50:10,059 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i[23604,23617] [2023-03-31 22:50:10,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:50:10,099 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:50:10,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:10 WrapperNode [2023-03-31 22:50:10,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:50:10,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:50:10,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:50:10,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:50:10,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:10" (1/1) ... [2023-03-31 22:50:10,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:10" (1/1) ... [2023-03-31 22:50:10,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:10" (1/1) ... [2023-03-31 22:50:10,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:10" (1/1) ... [2023-03-31 22:50:10,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:10" (1/1) ... [2023-03-31 22:50:10,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:10" (1/1) ... [2023-03-31 22:50:10,166 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:10" (1/1) ... [2023-03-31 22:50:10,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:10" (1/1) ... [2023-03-31 22:50:10,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:50:10,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:50:10,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:50:10,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:50:10,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:10" (1/1) ... [2023-03-31 22:50:10,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:50:10,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:50:10,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 22:50:10,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 22:50:10,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:50:10,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:50:10,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:50:10,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:50:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-03-31 22:50:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-03-31 22:50:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-03-31 22:50:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-03-31 22:50:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-03-31 22:50:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-03-31 22:50:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-03-31 22:50:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-03-31 22:50:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-03-31 22:50:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-03-31 22:50:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-03-31 22:50:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-03-31 22:50:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-03-31 22:50:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-03-31 22:50:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-03-31 22:50:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-03-31 22:50:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-03-31 22:50:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-03-31 22:50:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-03-31 22:50:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-03-31 22:50:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-03-31 22:50:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-03-31 22:50:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-03-31 22:50:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-03-31 22:50:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-03-31 22:50:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-03-31 22:50:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-03-31 22:50:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-03-31 22:50:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-03-31 22:50:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-03-31 22:50:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-03-31 22:50:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-03-31 22:50:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-03-31 22:50:10,243 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-03-31 22:50:10,243 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-03-31 22:50:10,243 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-03-31 22:50:10,243 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-03-31 22:50:10,243 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-03-31 22:50:10,243 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-03-31 22:50:10,243 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-03-31 22:50:10,243 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-03-31 22:50:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-03-31 22:50:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-03-31 22:50:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-03-31 22:50:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-03-31 22:50:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-03-31 22:50:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-03-31 22:50:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-03-31 22:50:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-03-31 22:50:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-03-31 22:50:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 22:50:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-03-31 22:50:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-03-31 22:50:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 22:50:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-03-31 22:50:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-03-31 22:50:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-03-31 22:50:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-03-31 22:50:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-03-31 22:50:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:50:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-03-31 22:50:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-03-31 22:50:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-03-31 22:50:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 22:50:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-03-31 22:50:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-03-31 22:50:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-03-31 22:50:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-03-31 22:50:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-03-31 22:50:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-03-31 22:50:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-03-31 22:50:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-03-31 22:50:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-03-31 22:50:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-03-31 22:50:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-03-31 22:50:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-03-31 22:50:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-03-31 22:50:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-03-31 22:50:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-03-31 22:50:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-03-31 22:50:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-03-31 22:50:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-03-31 22:50:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-03-31 22:50:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-03-31 22:50:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-03-31 22:50:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-03-31 22:50:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-03-31 22:50:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-03-31 22:50:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-03-31 22:50:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-03-31 22:50:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-03-31 22:50:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-03-31 22:50:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-03-31 22:50:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-03-31 22:50:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-03-31 22:50:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-03-31 22:50:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-03-31 22:50:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-03-31 22:50:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-03-31 22:50:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-03-31 22:50:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-03-31 22:50:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-03-31 22:50:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-03-31 22:50:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 22:50:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:50:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 22:50:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 22:50:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:50:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:50:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:50:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 22:50:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 22:50:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:50:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 22:50:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:50:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:50:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:50:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:50:10,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:50:10,529 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:50:10,533 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:50:11,052 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:50:11,177 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:50:11,177 INFO L302 CfgBuilder]: Removed 31 assume(true) statements. [2023-03-31 22:50:11,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:50:11 BoogieIcfgContainer [2023-03-31 22:50:11,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:50:11,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:50:11,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:50:11,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:50:11,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:50:09" (1/3) ... [2023-03-31 22:50:11,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685b66a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:50:11, skipping insertion in model container [2023-03-31 22:50:11,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:10" (2/3) ... [2023-03-31 22:50:11,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685b66a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:50:11, skipping insertion in model container [2023-03-31 22:50:11,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:50:11" (3/3) ... [2023-03-31 22:50:11,205 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-queue-2.i [2023-03-31 22:50:11,222 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:50:11,222 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-03-31 22:50:11,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:50:11,342 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1ac81086, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:50:11,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-03-31 22:50:11,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 63 states have (on average 2.015873015873016) internal successors, (127), 77 states have internal predecessors, (127), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 22:50:11,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-03-31 22:50:11,352 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:50:11,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:50:11,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-03-31 22:50:11,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:50:11,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1606316518, now seen corresponding path program 1 times [2023-03-31 22:50:11,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:50:11,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123840768] [2023-03-31 22:50:11,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:11,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:50:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:50:11,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:50:11,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:50:11,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123840768] [2023-03-31 22:50:11,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123840768] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:50:11,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:50:11,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 22:50:11,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472784768] [2023-03-31 22:50:11,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:50:11,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 22:50:11,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:50:11,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 22:50:11,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 22:50:11,738 INFO L87 Difference]: Start difference. First operand has 82 states, 63 states have (on average 2.015873015873016) internal successors, (127), 77 states have internal predecessors, (127), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:11,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:50:11,797 INFO L93 Difference]: Finished difference Result 159 states and 257 transitions. [2023-03-31 22:50:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 22:50:11,799 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2023-03-31 22:50:11,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:50:11,807 INFO L225 Difference]: With dead ends: 159 [2023-03-31 22:50:11,808 INFO L226 Difference]: Without dead ends: 78 [2023-03-31 22:50:11,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 22:50:11,815 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:50:11,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:50:11,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-03-31 22:50:11,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-03-31 22:50:11,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 61 states have (on average 1.2950819672131149) internal successors, (79), 74 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2023-03-31 22:50:11,847 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 8 [2023-03-31 22:50:11,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:50:11,847 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2023-03-31 22:50:11,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:11,847 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2023-03-31 22:50:11,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-03-31 22:50:11,848 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:50:11,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:50:11,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:50:11,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-03-31 22:50:11,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:50:11,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1745551194, now seen corresponding path program 1 times [2023-03-31 22:50:11,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:50:11,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241300878] [2023-03-31 22:50:11,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:11,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:50:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:50:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:50:11,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:50:11,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241300878] [2023-03-31 22:50:11,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241300878] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:50:11,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:50:11,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:50:11,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625771933] [2023-03-31 22:50:11,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:50:11,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:50:11,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:50:11,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:50:11,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:50:11,926 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:11,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:50:11,988 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2023-03-31 22:50:11,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:50:11,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-03-31 22:50:11,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:50:11,992 INFO L225 Difference]: With dead ends: 78 [2023-03-31 22:50:11,993 INFO L226 Difference]: Without dead ends: 68 [2023-03-31 22:50:11,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:50:11,995 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 65 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:50:11,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 58 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:50:12,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-03-31 22:50:12,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-03-31 22:50:12,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 64 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2023-03-31 22:50:12,007 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 9 [2023-03-31 22:50:12,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:50:12,007 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2023-03-31 22:50:12,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:12,007 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2023-03-31 22:50:12,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 22:50:12,008 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:50:12,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:50:12,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:50:12,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-03-31 22:50:12,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:50:12,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2120770878, now seen corresponding path program 1 times [2023-03-31 22:50:12,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:50:12,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090118389] [2023-03-31 22:50:12,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:12,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:50:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:50:12,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:50:12,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:50:12,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090118389] [2023-03-31 22:50:12,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090118389] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:50:12,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:50:12,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 22:50:12,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88623236] [2023-03-31 22:50:12,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:50:12,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 22:50:12,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:50:12,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 22:50:12,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:50:12,575 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:12,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:50:12,734 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2023-03-31 22:50:12,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 22:50:12,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-03-31 22:50:12,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:50:12,739 INFO L225 Difference]: With dead ends: 162 [2023-03-31 22:50:12,739 INFO L226 Difference]: Without dead ends: 108 [2023-03-31 22:50:12,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 22:50:12,741 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 138 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:50:12,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 102 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:50:12,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-03-31 22:50:12,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 71. [2023-03-31 22:50:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 67 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2023-03-31 22:50:12,752 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 11 [2023-03-31 22:50:12,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:50:12,752 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2023-03-31 22:50:12,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:12,753 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2023-03-31 22:50:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-03-31 22:50:12,753 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:50:12,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:50:12,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 22:50:12,760 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-03-31 22:50:12,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:50:12,761 INFO L85 PathProgramCache]: Analyzing trace with hash -932290037, now seen corresponding path program 1 times [2023-03-31 22:50:12,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:50:12,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427674824] [2023-03-31 22:50:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:12,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:50:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:50:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:50:12,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:50:12,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427674824] [2023-03-31 22:50:12,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427674824] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:50:12,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:50:12,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:50:12,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405408751] [2023-03-31 22:50:12,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:50:12,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:50:12,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:50:12,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:50:12,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:50:12,815 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:12,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:50:12,879 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2023-03-31 22:50:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:50:12,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-03-31 22:50:12,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:50:12,882 INFO L225 Difference]: With dead ends: 126 [2023-03-31 22:50:12,882 INFO L226 Difference]: Without dead ends: 82 [2023-03-31 22:50:12,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:50:12,883 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 11 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:50:12,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 122 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:50:12,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-03-31 22:50:12,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 73. [2023-03-31 22:50:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 69 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:12,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2023-03-31 22:50:12,902 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 16 [2023-03-31 22:50:12,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:50:12,902 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2023-03-31 22:50:12,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:12,903 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2023-03-31 22:50:12,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-03-31 22:50:12,904 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:50:12,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:50:12,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 22:50:12,904 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-03-31 22:50:12,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:50:12,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1917344390, now seen corresponding path program 1 times [2023-03-31 22:50:12,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:50:12,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519961641] [2023-03-31 22:50:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:12,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:50:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:50:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:50:12,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:50:12,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519961641] [2023-03-31 22:50:12,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519961641] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:50:12,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:50:12,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 22:50:12,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970712463] [2023-03-31 22:50:12,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:50:12,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 22:50:12,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:50:12,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 22:50:12,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:50:12,994 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:13,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:50:13,071 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2023-03-31 22:50:13,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 22:50:13,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-03-31 22:50:13,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:50:13,072 INFO L225 Difference]: With dead ends: 82 [2023-03-31 22:50:13,072 INFO L226 Difference]: Without dead ends: 68 [2023-03-31 22:50:13,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 22:50:13,073 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 4 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:50:13,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 182 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:50:13,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-03-31 22:50:13,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-03-31 22:50:13,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 64 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:13,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2023-03-31 22:50:13,080 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 18 [2023-03-31 22:50:13,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:50:13,081 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2023-03-31 22:50:13,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:13,081 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2023-03-31 22:50:13,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-03-31 22:50:13,081 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:50:13,082 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:50:13,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 22:50:13,082 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-03-31 22:50:13,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:50:13,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1866230914, now seen corresponding path program 1 times [2023-03-31 22:50:13,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:50:13,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388669135] [2023-03-31 22:50:13,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:13,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:50:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:50:13,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:50:13,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:50:13,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388669135] [2023-03-31 22:50:13,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388669135] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:50:13,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158492662] [2023-03-31 22:50:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:13,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:50:13,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:50:13,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:50:13,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 22:50:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:50:13,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 30 conjunts are in the unsatisfiable core [2023-03-31 22:50:13,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:50:14,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 22:50:14,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-03-31 22:50:14,154 INFO L321 Elim1Store]: treesize reduction 67, result has 20.2 percent of original size [2023-03-31 22:50:14,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 88 [2023-03-31 22:50:14,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2023-03-31 22:50:14,190 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-03-31 22:50:14,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-03-31 22:50:14,401 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-03-31 22:50:14,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 39 [2023-03-31 22:50:14,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2023-03-31 22:50:14,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:50:14,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:50:14,652 INFO L321 Elim1Store]: treesize reduction 193, result has 38.3 percent of original size [2023-03-31 22:50:14,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 354 treesize of output 472 [2023-03-31 22:50:14,724 INFO L321 Elim1Store]: treesize reduction 38, result has 50.0 percent of original size [2023-03-31 22:50:14,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 408 treesize of output 350 [2023-03-31 22:50:14,805 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:50:14,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 672 treesize of output 558 [2023-03-31 22:50:15,376 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:50:15,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40268448 treesize of output 40201368 [2023-03-31 22:50:16,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1527 treesize of output 1437 [2023-03-31 22:50:16,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1201 treesize of output 1185 [2023-03-31 22:50:16,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1185 treesize of output 1177 [2023-03-31 22:50:16,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1177 treesize of output 1153 [2023-03-31 22:50:16,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1153 treesize of output 1145 [2023-03-31 22:50:16,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1145 treesize of output 1137 [2023-03-31 22:50:16,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1137 treesize of output 1113 [2023-03-31 22:50:16,890 INFO L321 Elim1Store]: treesize reduction 93, result has 32.6 percent of original size [2023-03-31 22:50:16,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 88 treesize of output 137 [2023-03-31 22:50:17,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-03-31 22:50:17,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-03-31 22:50:17,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-03-31 22:50:17,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-03-31 22:50:17,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-03-31 22:50:17,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-03-31 22:50:17,636 INFO L321 Elim1Store]: treesize reduction 10, result has 65.5 percent of original size [2023-03-31 22:50:17,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4252 treesize of output 3998 [2023-03-31 22:50:17,764 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:50:17,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 45 [2023-03-31 22:50:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:50:17,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158492662] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:50:17,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [11293500] [2023-03-31 22:50:17,943 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-03-31 22:50:17,943 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:50:17,948 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:50:17,953 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:50:17,953 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:50:18,006 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 23 for LOIs [2023-03-31 22:50:18,376 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 22:50:18,379 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:50:18,665 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1464#(and (= main_~head~0.offset 0) (= (select (select |#memory_$Pointer$.offset| main_~head~0.base) 0) 0) (not (= main_~head~0.base 0)) (= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.base| main_~head~0.base) 0) 0) (<= 0 |#StackHeapBarrier|) (= main_~status~0 1) (= |#NULL.base| 0))' at error location [2023-03-31 22:50:18,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 22:50:18,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 22:50:18,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-03-31 22:50:18,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031550281] [2023-03-31 22:50:18,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 22:50:18,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 22:50:18,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:50:18,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 22:50:18,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-03-31 22:50:18,667 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:18,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:50:18,934 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2023-03-31 22:50:18,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 22:50:18,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-03-31 22:50:18,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:50:18,938 INFO L225 Difference]: With dead ends: 129 [2023-03-31 22:50:18,938 INFO L226 Difference]: Without dead ends: 127 [2023-03-31 22:50:18,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2023-03-31 22:50:18,940 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 51 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 22:50:18,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 291 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 22:50:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-03-31 22:50:18,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 81. [2023-03-31 22:50:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 70 states have (on average 1.2) internal successors, (84), 77 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:18,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2023-03-31 22:50:18,949 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 21 [2023-03-31 22:50:18,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:50:18,949 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2023-03-31 22:50:18,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:18,950 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2023-03-31 22:50:18,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-03-31 22:50:18,950 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:50:18,950 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:50:18,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-31 22:50:19,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-03-31 22:50:19,157 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-03-31 22:50:19,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:50:19,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1700873752, now seen corresponding path program 1 times [2023-03-31 22:50:19,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:50:19,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313282780] [2023-03-31 22:50:19,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:19,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:50:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:50:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:50:19,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:50:19,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313282780] [2023-03-31 22:50:19,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313282780] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:50:19,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293135022] [2023-03-31 22:50:19,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:19,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:50:19,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:50:19,244 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:50:19,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 22:50:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:50:19,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-31 22:50:19,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:50:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:50:19,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:50:19,512 INFO L321 Elim1Store]: treesize reduction 68, result has 48.9 percent of original size [2023-03-31 22:50:19,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 127 treesize of output 199 [2023-03-31 22:50:19,583 INFO L321 Elim1Store]: treesize reduction 68, result has 48.9 percent of original size [2023-03-31 22:50:19,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 172 [2023-03-31 22:50:19,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:50:19,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293135022] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:50:19,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1694152540] [2023-03-31 22:50:19,684 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-03-31 22:50:19,684 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:50:19,684 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:50:19,685 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:50:19,685 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:50:19,699 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 23 for LOIs [2023-03-31 22:50:20,060 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 22:50:20,064 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:50:20,307 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1886#(and (= main_~head~0.offset 0) (= main_~status~0 2) (= (select (select |#memory_$Pointer$.offset| main_~head~0.base) 0) 0) (not (= main_~head~0.base 0)) (= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.base| main_~head~0.base) 0) 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 22:50:20,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 22:50:20,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 22:50:20,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-03-31 22:50:20,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018188156] [2023-03-31 22:50:20,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 22:50:20,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 22:50:20,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:50:20,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 22:50:20,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-03-31 22:50:20,308 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:20,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:50:20,405 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2023-03-31 22:50:20,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 22:50:20,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-03-31 22:50:20,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:50:20,408 INFO L225 Difference]: With dead ends: 137 [2023-03-31 22:50:20,408 INFO L226 Difference]: Without dead ends: 92 [2023-03-31 22:50:20,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-03-31 22:50:20,409 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 19 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:50:20,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 175 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:50:20,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-03-31 22:50:20,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2023-03-31 22:50:20,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 79 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2023-03-31 22:50:20,421 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 22 [2023-03-31 22:50:20,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:50:20,421 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2023-03-31 22:50:20,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:20,421 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2023-03-31 22:50:20,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-03-31 22:50:20,425 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:50:20,425 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:50:20,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 22:50:20,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-03-31 22:50:20,633 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-03-31 22:50:20,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:50:20,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1957651007, now seen corresponding path program 2 times [2023-03-31 22:50:20,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:50:20,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417581230] [2023-03-31 22:50:20,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:20,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:50:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:50:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:50:20,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:50:20,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417581230] [2023-03-31 22:50:20,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417581230] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:50:20,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507551688] [2023-03-31 22:50:20,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 22:50:20,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:50:20,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:50:20,837 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:50:20,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 22:50:21,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-03-31 22:50:21,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 22:50:21,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 22:50:21,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:50:21,156 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-03-31 22:50:21,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-03-31 22:50:21,183 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-03-31 22:50:21,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-03-31 22:50:21,213 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:50:21,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:50:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:50:21,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507551688] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:50:21,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1658545041] [2023-03-31 22:50:21,250 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-03-31 22:50:21,250 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:50:21,250 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:50:21,251 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:50:21,251 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:50:21,266 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 23 for LOIs [2023-03-31 22:50:21,590 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 22:50:21,593 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:50:21,857 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2352#(and (= main_~head~0.offset 0) (= (select (select |#memory_$Pointer$.offset| main_~head~0.base) 0) 0) (not (= main_~head~0.base 0)) (= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.base| main_~head~0.base) 0) 0) (<= 0 |#StackHeapBarrier|) (= main_~status~0 1) (= |#NULL.base| 0))' at error location [2023-03-31 22:50:21,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 22:50:21,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 22:50:21,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2023-03-31 22:50:21,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985647291] [2023-03-31 22:50:21,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 22:50:21,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 22:50:21,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:50:21,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 22:50:21,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-03-31 22:50:21,860 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:21,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:50:21,992 INFO L93 Difference]: Finished difference Result 147 states and 157 transitions. [2023-03-31 22:50:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 22:50:21,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2023-03-31 22:50:21,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:50:21,994 INFO L225 Difference]: With dead ends: 147 [2023-03-31 22:50:21,994 INFO L226 Difference]: Without dead ends: 106 [2023-03-31 22:50:21,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-03-31 22:50:21,996 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 132 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:50:21,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 262 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:50:21,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-03-31 22:50:22,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 87. [2023-03-31 22:50:22,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 77 states have (on average 1.155844155844156) internal successors, (89), 83 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 92 transitions. [2023-03-31 22:50:22,003 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 92 transitions. Word has length 27 [2023-03-31 22:50:22,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:50:22,003 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 92 transitions. [2023-03-31 22:50:22,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:22,004 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 92 transitions. [2023-03-31 22:50:22,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-03-31 22:50:22,004 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:50:22,004 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:50:22,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 22:50:22,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:50:22,212 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-03-31 22:50:22,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:50:22,213 INFO L85 PathProgramCache]: Analyzing trace with hash -239929339, now seen corresponding path program 2 times [2023-03-31 22:50:22,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:50:22,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342840543] [2023-03-31 22:50:22,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:22,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:50:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:50:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:50:23,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:50:23,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342840543] [2023-03-31 22:50:23,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342840543] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:50:23,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44200149] [2023-03-31 22:50:23,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 22:50:23,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:50:23,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:50:23,709 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:50:23,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 22:50:24,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-03-31 22:50:24,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 22:50:24,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 51 conjunts are in the unsatisfiable core [2023-03-31 22:50:24,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:50:24,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 22:50:24,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:50:24,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:50:24,120 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 22:50:24,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-03-31 22:50:24,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2023-03-31 22:50:24,138 INFO L321 Elim1Store]: treesize reduction 50, result has 9.1 percent of original size [2023-03-31 22:50:24,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 61 [2023-03-31 22:50:24,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-03-31 22:50:24,160 INFO L321 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2023-03-31 22:50:24,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2023-03-31 22:50:24,270 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-03-31 22:50:24,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 47 [2023-03-31 22:50:24,308 INFO L321 Elim1Store]: treesize reduction 130, result has 14.5 percent of original size [2023-03-31 22:50:24,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 124 [2023-03-31 22:50:24,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 91 [2023-03-31 22:50:24,333 INFO L321 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2023-03-31 22:50:24,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 38 [2023-03-31 22:50:24,349 INFO L321 Elim1Store]: treesize reduction 29, result has 35.6 percent of original size [2023-03-31 22:50:24,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 45 [2023-03-31 22:50:24,547 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-03-31 22:50:24,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 23 [2023-03-31 22:50:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:50:24,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:50:25,109 INFO L321 Elim1Store]: treesize reduction 196, result has 37.4 percent of original size [2023-03-31 22:50:25,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 354 treesize of output 469 [2023-03-31 22:50:25,186 INFO L321 Elim1Store]: treesize reduction 35, result has 53.9 percent of original size [2023-03-31 22:50:25,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 785 treesize of output 610 [2023-03-31 22:50:25,241 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:50:25,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1202 treesize of output 998 [2023-03-31 22:50:25,485 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:50:25,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 141 [2023-03-31 22:50:25,520 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:50:25,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 141 [2023-03-31 22:50:25,585 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:50:25,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 141