./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/forester-heap/dll-01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/dll-01-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dd9f812dd0592e9d2894b2831060b27794691dcfdafe5c5494c28350656b71ee --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 17:56:10,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 17:56:10,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 17:56:10,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 17:56:10,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 17:56:10,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 17:56:10,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 17:56:10,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 17:56:10,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 17:56:10,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 17:56:10,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 17:56:10,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 17:56:10,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 17:56:10,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 17:56:10,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 17:56:10,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 17:56:10,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 17:56:10,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 17:56:10,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 17:56:10,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 17:56:10,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 17:56:10,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 17:56:10,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 17:56:10,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 17:56:10,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 17:56:10,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 17:56:10,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 17:56:10,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 17:56:10,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 17:56:10,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 17:56:10,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 17:56:10,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 17:56:10,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 17:56:10,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 17:56:10,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 17:56:10,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 17:56:10,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 17:56:10,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 17:56:10,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 17:56:10,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 17:56:10,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 17:56:10,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-12-21 17:56:10,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 17:56:10,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 17:56:10,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 17:56:10,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 17:56:10,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 17:56:10,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 17:56:10,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 17:56:10,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 17:56:10,230 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 17:56:10,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 17:56:10,231 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 17:56:10,231 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 17:56:10,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 17:56:10,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 17:56:10,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 17:56:10,232 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-21 17:56:10,232 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-21 17:56:10,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 17:56:10,232 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 17:56:10,232 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 17:56:10,232 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 17:56:10,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 17:56:10,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 17:56:10,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 17:56:10,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 17:56:10,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 17:56:10,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 17:56:10,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 17:56:10,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 17:56:10,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 17:56:10,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd9f812dd0592e9d2894b2831060b27794691dcfdafe5c5494c28350656b71ee [2021-12-21 17:56:10,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 17:56:10,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 17:56:10,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 17:56:10,430 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 17:56:10,430 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 17:56:10,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-01-1.i [2021-12-21 17:56:10,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/023c5179c/c8054669ed964dbda5ab6bf516fa353a/FLAG88c33c4f4 [2021-12-21 17:56:10,850 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 17:56:10,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i [2021-12-21 17:56:10,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/023c5179c/c8054669ed964dbda5ab6bf516fa353a/FLAG88c33c4f4 [2021-12-21 17:56:10,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/023c5179c/c8054669ed964dbda5ab6bf516fa353a [2021-12-21 17:56:10,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 17:56:10,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 17:56:10,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 17:56:10,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 17:56:10,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 17:56:10,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:56:10" (1/1) ... [2021-12-21 17:56:10,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b25a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:10, skipping insertion in model container [2021-12-21 17:56:10,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:56:10" (1/1) ... [2021-12-21 17:56:10,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 17:56:10,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 17:56:11,230 WARN L230 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-01-1.i[22080,22093] [2021-12-21 17:56:11,241 WARN L230 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-01-1.i[22353,22366] [2021-12-21 17:56:11,245 WARN L230 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-01-1.i[22587,22600] [2021-12-21 17:56:11,246 WARN L230 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-01-1.i[22657,22670] [2021-12-21 17:56:11,263 WARN L230 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-01-1.i[22924,22937] [2021-12-21 17:56:11,264 WARN L230 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-01-1.i[23032,23045] [2021-12-21 17:56:11,267 WARN L230 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-01-1.i[23263,23276] [2021-12-21 17:56:11,269 WARN L230 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-01-1.i[23343,23356] [2021-12-21 17:56:11,271 WARN L230 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-01-1.i[23422,23435] [2021-12-21 17:56:11,272 WARN L230 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-01-1.i[23512,23525] [2021-12-21 17:56:11,275 WARN L230 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-01-1.i[23690,23703] [2021-12-21 17:56:11,276 WARN L230 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-01-1.i[23768,23781] [2021-12-21 17:56:11,277 WARN L230 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-01-1.i[23845,23858] [2021-12-21 17:56:11,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 17:56:11,291 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 17:56:11,311 WARN L230 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-01-1.i[22080,22093] [2021-12-21 17:56:11,312 WARN L230 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-01-1.i[22353,22366] [2021-12-21 17:56:11,314 WARN L230 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-01-1.i[22587,22600] [2021-12-21 17:56:11,314 WARN L230 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-01-1.i[22657,22670] [2021-12-21 17:56:11,315 WARN L230 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-01-1.i[22924,22937] [2021-12-21 17:56:11,316 WARN L230 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-01-1.i[23032,23045] [2021-12-21 17:56:11,317 WARN L230 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-01-1.i[23263,23276] [2021-12-21 17:56:11,317 WARN L230 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-01-1.i[23343,23356] [2021-12-21 17:56:11,318 WARN L230 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-01-1.i[23422,23435] [2021-12-21 17:56:11,318 WARN L230 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-01-1.i[23512,23525] [2021-12-21 17:56:11,320 WARN L230 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-01-1.i[23690,23703] [2021-12-21 17:56:11,321 WARN L230 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-01-1.i[23768,23781] [2021-12-21 17:56:11,321 WARN L230 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-01-1.i[23845,23858] [2021-12-21 17:56:11,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 17:56:11,338 INFO L208 MainTranslator]: Completed translation [2021-12-21 17:56:11,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:11 WrapperNode [2021-12-21 17:56:11,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 17:56:11,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 17:56:11,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 17:56:11,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 17:56:11,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:11" (1/1) ... [2021-12-21 17:56:11,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:11" (1/1) ... [2021-12-21 17:56:11,398 INFO L137 Inliner]: procedures = 119, calls = 44, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 231 [2021-12-21 17:56:11,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 17:56:11,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 17:56:11,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 17:56:11,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 17:56:11,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:11" (1/1) ... [2021-12-21 17:56:11,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:11" (1/1) ... [2021-12-21 17:56:11,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:11" (1/1) ... [2021-12-21 17:56:11,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:11" (1/1) ... [2021-12-21 17:56:11,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:11" (1/1) ... [2021-12-21 17:56:11,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:11" (1/1) ... [2021-12-21 17:56:11,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:11" (1/1) ... [2021-12-21 17:56:11,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 17:56:11,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 17:56:11,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 17:56:11,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 17:56:11,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:11" (1/1) ... [2021-12-21 17:56:11,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 17:56:11,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 17:56:11,480 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) [2021-12-21 17:56:11,494 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 [2021-12-21 17:56:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 17:56:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 17:56:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 17:56:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 17:56:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 17:56:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 17:56:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 17:56:11,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 17:56:11,574 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 17:56:11,575 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 17:56:12,022 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 17:56:12,030 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 17:56:12,031 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-12-21 17:56:12,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:56:12 BoogieIcfgContainer [2021-12-21 17:56:12,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 17:56:12,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 17:56:12,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 17:56:12,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 17:56:12,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:56:10" (1/3) ... [2021-12-21 17:56:12,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6667e398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:56:12, skipping insertion in model container [2021-12-21 17:56:12,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:11" (2/3) ... [2021-12-21 17:56:12,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6667e398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:56:12, skipping insertion in model container [2021-12-21 17:56:12,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:56:12" (3/3) ... [2021-12-21 17:56:12,041 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2021-12-21 17:56:12,045 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 17:56:12,045 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2021-12-21 17:56:12,080 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 17:56:12,085 INFO L339 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 17:56:12,085 INFO L340 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2021-12-21 17:56:12,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 200 states, 115 states have (on average 2.1913043478260867) internal successors, (252), 199 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:12,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-21 17:56:12,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:12,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-21 17:56:12,103 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:12,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:12,107 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-21 17:56:12,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:12,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836359134] [2021-12-21 17:56:12,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:12,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:12,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:12,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836359134] [2021-12-21 17:56:12,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836359134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:12,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:12,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 17:56:12,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325359742] [2021-12-21 17:56:12,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:12,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:56:12,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:12,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:56:12,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:12,253 INFO L87 Difference]: Start difference. First operand has 200 states, 115 states have (on average 2.1913043478260867) internal successors, (252), 199 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:12,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:12,412 INFO L93 Difference]: Finished difference Result 201 states and 210 transitions. [2021-12-21 17:56:12,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:56:12,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-21 17:56:12,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:12,422 INFO L225 Difference]: With dead ends: 201 [2021-12-21 17:56:12,423 INFO L226 Difference]: Without dead ends: 197 [2021-12-21 17:56:12,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:12,426 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 191 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:12,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 122 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:12,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-21 17:56:12,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 192. [2021-12-21 17:56:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 117 states have (on average 1.7435897435897436) internal successors, (204), 191 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 204 transitions. [2021-12-21 17:56:12,470 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 204 transitions. Word has length 3 [2021-12-21 17:56:12,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:12,470 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 204 transitions. [2021-12-21 17:56:12,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:12,471 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 204 transitions. [2021-12-21 17:56:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-21 17:56:12,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:12,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-21 17:56:12,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 17:56:12,472 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:12,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:12,475 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-21 17:56:12,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:12,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582621507] [2021-12-21 17:56:12,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:12,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:12,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:12,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582621507] [2021-12-21 17:56:12,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582621507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:12,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:12,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 17:56:12,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142807867] [2021-12-21 17:56:12,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:12,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:56:12,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:12,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:56:12,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:12,540 INFO L87 Difference]: Start difference. First operand 192 states and 204 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:12,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:12,656 INFO L93 Difference]: Finished difference Result 221 states and 232 transitions. [2021-12-21 17:56:12,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:56:12,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-21 17:56:12,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:12,661 INFO L225 Difference]: With dead ends: 221 [2021-12-21 17:56:12,661 INFO L226 Difference]: Without dead ends: 221 [2021-12-21 17:56:12,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:12,667 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 180 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:12,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 148 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:12,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-21 17:56:12,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 201. [2021-12-21 17:56:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 134 states have (on average 1.671641791044776) internal successors, (224), 200 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 224 transitions. [2021-12-21 17:56:12,688 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 224 transitions. Word has length 3 [2021-12-21 17:56:12,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:12,688 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 224 transitions. [2021-12-21 17:56:12,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:12,689 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 224 transitions. [2021-12-21 17:56:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-21 17:56:12,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:12,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-21 17:56:12,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 17:56:12,689 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:12,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:12,692 INFO L85 PathProgramCache]: Analyzing trace with hash 889446311, now seen corresponding path program 1 times [2021-12-21 17:56:12,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:12,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730081550] [2021-12-21 17:56:12,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:12,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:12,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:12,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730081550] [2021-12-21 17:56:12,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730081550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:12,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:12,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 17:56:12,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947320087] [2021-12-21 17:56:12,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:12,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:56:12,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:12,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:56:12,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:12,739 INFO L87 Difference]: Start difference. First operand 201 states and 224 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:12,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:12,767 INFO L93 Difference]: Finished difference Result 216 states and 227 transitions. [2021-12-21 17:56:12,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:56:12,767 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-21 17:56:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:12,768 INFO L225 Difference]: With dead ends: 216 [2021-12-21 17:56:12,768 INFO L226 Difference]: Without dead ends: 216 [2021-12-21 17:56:12,768 INFO L932 BasicCegarLoop]: 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 [2021-12-21 17:56:12,770 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 176 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:12,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 203 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:56:12,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-21 17:56:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 199. [2021-12-21 17:56:12,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 133 states have (on average 1.6616541353383458) internal successors, (221), 198 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:12,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 221 transitions. [2021-12-21 17:56:12,777 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 221 transitions. Word has length 6 [2021-12-21 17:56:12,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:12,778 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 221 transitions. [2021-12-21 17:56:12,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:12,778 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 221 transitions. [2021-12-21 17:56:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 17:56:12,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:12,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:12,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 17:56:12,779 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:12,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:12,780 INFO L85 PathProgramCache]: Analyzing trace with hash 2020777177, now seen corresponding path program 1 times [2021-12-21 17:56:12,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:12,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799946301] [2021-12-21 17:56:12,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:12,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:12,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:12,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:12,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799946301] [2021-12-21 17:56:12,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799946301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:12,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:12,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:56:12,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442826287] [2021-12-21 17:56:12,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:12,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:56:12,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:12,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:56:12,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:56:12,848 INFO L87 Difference]: Start difference. First operand 199 states and 221 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:12,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:12,999 INFO L93 Difference]: Finished difference Result 198 states and 220 transitions. [2021-12-21 17:56:12,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 17:56:12,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-21 17:56:13,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:13,000 INFO L225 Difference]: With dead ends: 198 [2021-12-21 17:56:13,000 INFO L226 Difference]: Without dead ends: 198 [2021-12-21 17:56:13,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 17:56:13,004 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 4 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:13,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 535 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:13,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-12-21 17:56:13,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-12-21 17:56:13,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 133 states have (on average 1.6541353383458646) internal successors, (220), 197 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 220 transitions. [2021-12-21 17:56:13,017 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 220 transitions. Word has length 12 [2021-12-21 17:56:13,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:13,018 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 220 transitions. [2021-12-21 17:56:13,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,018 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 220 transitions. [2021-12-21 17:56:13,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 17:56:13,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:13,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:13,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 17:56:13,019 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:13,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:13,020 INFO L85 PathProgramCache]: Analyzing trace with hash 2020777178, now seen corresponding path program 1 times [2021-12-21 17:56:13,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:13,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034243341] [2021-12-21 17:56:13,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:13,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:13,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:13,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034243341] [2021-12-21 17:56:13,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034243341] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:13,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:13,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:56:13,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137019638] [2021-12-21 17:56:13,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:13,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:56:13,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:13,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:56:13,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:56:13,085 INFO L87 Difference]: Start difference. First operand 198 states and 220 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:13,211 INFO L93 Difference]: Finished difference Result 197 states and 219 transitions. [2021-12-21 17:56:13,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 17:56:13,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-21 17:56:13,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:13,212 INFO L225 Difference]: With dead ends: 197 [2021-12-21 17:56:13,212 INFO L226 Difference]: Without dead ends: 197 [2021-12-21 17:56:13,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 17:56:13,213 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 2 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:13,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 546 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:13,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-21 17:56:13,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2021-12-21 17:56:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 133 states have (on average 1.6466165413533835) internal successors, (219), 196 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 219 transitions. [2021-12-21 17:56:13,217 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 219 transitions. Word has length 12 [2021-12-21 17:56:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:13,217 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 219 transitions. [2021-12-21 17:56:13,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,217 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 219 transitions. [2021-12-21 17:56:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-21 17:56:13,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:13,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:13,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 17:56:13,218 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:13,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:13,219 INFO L85 PathProgramCache]: Analyzing trace with hash 373192235, now seen corresponding path program 1 times [2021-12-21 17:56:13,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:13,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543102442] [2021-12-21 17:56:13,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:13,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:13,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:13,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543102442] [2021-12-21 17:56:13,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543102442] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:13,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:13,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 17:56:13,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912617604] [2021-12-21 17:56:13,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:13,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:56:13,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:13,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:56:13,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:13,247 INFO L87 Difference]: Start difference. First operand 197 states and 219 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:13,265 INFO L93 Difference]: Finished difference Result 198 states and 220 transitions. [2021-12-21 17:56:13,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:56:13,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-21 17:56:13,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:13,266 INFO L225 Difference]: With dead ends: 198 [2021-12-21 17:56:13,266 INFO L226 Difference]: Without dead ends: 198 [2021-12-21 17:56:13,267 INFO L932 BasicCegarLoop]: 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 [2021-12-21 17:56:13,267 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:13,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 364 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:56:13,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-12-21 17:56:13,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-12-21 17:56:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 134 states have (on average 1.6417910447761195) internal successors, (220), 197 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 220 transitions. [2021-12-21 17:56:13,277 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 220 transitions. Word has length 14 [2021-12-21 17:56:13,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:13,277 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 220 transitions. [2021-12-21 17:56:13,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,278 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 220 transitions. [2021-12-21 17:56:13,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-21 17:56:13,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:13,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:13,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 17:56:13,278 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:13,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:13,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1583692102, now seen corresponding path program 1 times [2021-12-21 17:56:13,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:13,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913556363] [2021-12-21 17:56:13,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:13,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:13,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:13,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913556363] [2021-12-21 17:56:13,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913556363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:13,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:13,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 17:56:13,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854538353] [2021-12-21 17:56:13,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:13,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 17:56:13,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 17:56:13,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:56:13,359 INFO L87 Difference]: Start difference. First operand 198 states and 220 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:13,588 INFO L93 Difference]: Finished difference Result 198 states and 219 transitions. [2021-12-21 17:56:13,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 17:56:13,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-21 17:56:13,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:13,589 INFO L225 Difference]: With dead ends: 198 [2021-12-21 17:56:13,590 INFO L226 Difference]: Without dead ends: 198 [2021-12-21 17:56:13,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-12-21 17:56:13,590 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 172 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:13,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 669 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 17:56:13,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-12-21 17:56:13,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2021-12-21 17:56:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 134 states have (on average 1.6343283582089552) internal successors, (219), 196 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 219 transitions. [2021-12-21 17:56:13,593 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 219 transitions. Word has length 15 [2021-12-21 17:56:13,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:13,593 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 219 transitions. [2021-12-21 17:56:13,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,593 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 219 transitions. [2021-12-21 17:56:13,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-21 17:56:13,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:13,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:13,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 17:56:13,594 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:13,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:13,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1583692101, now seen corresponding path program 1 times [2021-12-21 17:56:13,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:13,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383023205] [2021-12-21 17:56:13,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:13,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:13,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:13,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383023205] [2021-12-21 17:56:13,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383023205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:13,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:13,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 17:56:13,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269120514] [2021-12-21 17:56:13,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:13,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 17:56:13,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:13,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 17:56:13,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:56:13,707 INFO L87 Difference]: Start difference. First operand 197 states and 219 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:13,922 INFO L93 Difference]: Finished difference Result 197 states and 218 transitions. [2021-12-21 17:56:13,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 17:56:13,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-21 17:56:13,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:13,923 INFO L225 Difference]: With dead ends: 197 [2021-12-21 17:56:13,923 INFO L226 Difference]: Without dead ends: 197 [2021-12-21 17:56:13,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-12-21 17:56:13,924 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 171 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:13,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 397 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 17:56:13,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-21 17:56:13,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-12-21 17:56:13,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 134 states have (on average 1.626865671641791) internal successors, (218), 195 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 218 transitions. [2021-12-21 17:56:13,927 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 218 transitions. Word has length 15 [2021-12-21 17:56:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:13,927 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 218 transitions. [2021-12-21 17:56:13,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 218 transitions. [2021-12-21 17:56:13,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 17:56:13,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:13,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:13,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 17:56:13,927 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:13,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:13,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2137878992, now seen corresponding path program 1 times [2021-12-21 17:56:13,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:13,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471087515] [2021-12-21 17:56:13,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:13,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:13,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:13,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471087515] [2021-12-21 17:56:13,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471087515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:13,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:13,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 17:56:13,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205347394] [2021-12-21 17:56:13,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:13,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 17:56:13,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:13,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 17:56:13,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 17:56:13,993 INFO L87 Difference]: Start difference. First operand 196 states and 218 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:14,147 INFO L93 Difference]: Finished difference Result 283 states and 311 transitions. [2021-12-21 17:56:14,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 17:56:14,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-21 17:56:14,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:14,149 INFO L225 Difference]: With dead ends: 283 [2021-12-21 17:56:14,149 INFO L226 Difference]: Without dead ends: 283 [2021-12-21 17:56:14,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-12-21 17:56:14,150 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 195 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:14,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 649 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-12-21 17:56:14,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 193. [2021-12-21 17:56:14,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 132 states have (on average 1.628787878787879) internal successors, (215), 192 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 215 transitions. [2021-12-21 17:56:14,154 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 215 transitions. Word has length 16 [2021-12-21 17:56:14,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:14,154 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 215 transitions. [2021-12-21 17:56:14,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,154 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 215 transitions. [2021-12-21 17:56:14,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-21 17:56:14,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:14,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:14,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 17:56:14,155 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:14,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:14,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1339025717, now seen corresponding path program 1 times [2021-12-21 17:56:14,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:14,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150126832] [2021-12-21 17:56:14,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:14,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:14,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:14,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150126832] [2021-12-21 17:56:14,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150126832] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:14,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:14,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:56:14,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017072927] [2021-12-21 17:56:14,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:14,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:56:14,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:14,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:56:14,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:56:14,194 INFO L87 Difference]: Start difference. First operand 193 states and 215 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:14,290 INFO L93 Difference]: Finished difference Result 284 states and 311 transitions. [2021-12-21 17:56:14,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:56:14,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-21 17:56:14,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:14,291 INFO L225 Difference]: With dead ends: 284 [2021-12-21 17:56:14,291 INFO L226 Difference]: Without dead ends: 284 [2021-12-21 17:56:14,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 17:56:14,292 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 100 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:14,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 611 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:14,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-12-21 17:56:14,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 196. [2021-12-21 17:56:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 135 states have (on average 1.614814814814815) internal successors, (218), 195 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 218 transitions. [2021-12-21 17:56:14,296 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 218 transitions. Word has length 18 [2021-12-21 17:56:14,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:14,296 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 218 transitions. [2021-12-21 17:56:14,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,296 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 218 transitions. [2021-12-21 17:56:14,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 17:56:14,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:14,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:14,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 17:56:14,297 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:14,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:14,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1029802310, now seen corresponding path program 1 times [2021-12-21 17:56:14,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:14,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543121120] [2021-12-21 17:56:14,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:14,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:14,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:14,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543121120] [2021-12-21 17:56:14,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543121120] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:14,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:14,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 17:56:14,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947274566] [2021-12-21 17:56:14,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:14,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:56:14,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:14,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:56:14,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:56:14,337 INFO L87 Difference]: Start difference. First operand 196 states and 218 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:14,427 INFO L93 Difference]: Finished difference Result 191 states and 211 transitions. [2021-12-21 17:56:14,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 17:56:14,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-21 17:56:14,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:14,428 INFO L225 Difference]: With dead ends: 191 [2021-12-21 17:56:14,429 INFO L226 Difference]: Without dead ends: 191 [2021-12-21 17:56:14,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:56:14,430 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 257 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:14,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 115 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:14,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-12-21 17:56:14,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 186. [2021-12-21 17:56:14,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 137 states have (on average 1.5182481751824817) internal successors, (208), 185 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 208 transitions. [2021-12-21 17:56:14,433 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 208 transitions. Word has length 20 [2021-12-21 17:56:14,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:14,434 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 208 transitions. [2021-12-21 17:56:14,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,434 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 208 transitions. [2021-12-21 17:56:14,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 17:56:14,436 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:14,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:14,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 17:56:14,436 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:14,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:14,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1029802309, now seen corresponding path program 1 times [2021-12-21 17:56:14,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:14,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064921287] [2021-12-21 17:56:14,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:14,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:14,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:14,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:14,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064921287] [2021-12-21 17:56:14,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064921287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:14,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:14,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:56:14,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644965532] [2021-12-21 17:56:14,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:14,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 17:56:14,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:14,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 17:56:14,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:56:14,496 INFO L87 Difference]: Start difference. First operand 186 states and 208 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:14,686 INFO L93 Difference]: Finished difference Result 247 states and 262 transitions. [2021-12-21 17:56:14,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:56:14,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-21 17:56:14,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:14,687 INFO L225 Difference]: With dead ends: 247 [2021-12-21 17:56:14,687 INFO L226 Difference]: Without dead ends: 247 [2021-12-21 17:56:14,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 17:56:14,688 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 449 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:14,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 254 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 17:56:14,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-12-21 17:56:14,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 210. [2021-12-21 17:56:14,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 161 states have (on average 1.5279503105590062) internal successors, (246), 209 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 246 transitions. [2021-12-21 17:56:14,691 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 246 transitions. Word has length 20 [2021-12-21 17:56:14,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:14,691 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 246 transitions. [2021-12-21 17:56:14,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,691 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 246 transitions. [2021-12-21 17:56:14,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 17:56:14,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:14,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:14,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 17:56:14,692 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:14,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:14,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1797484881, now seen corresponding path program 1 times [2021-12-21 17:56:14,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:14,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008501427] [2021-12-21 17:56:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:14,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:14,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:14,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:14,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008501427] [2021-12-21 17:56:14,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008501427] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:14,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:14,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:56:14,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707813228] [2021-12-21 17:56:14,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:14,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:56:14,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:14,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:56:14,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:56:14,734 INFO L87 Difference]: Start difference. First operand 210 states and 246 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:14,802 INFO L93 Difference]: Finished difference Result 242 states and 256 transitions. [2021-12-21 17:56:14,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 17:56:14,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-21 17:56:14,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:14,804 INFO L225 Difference]: With dead ends: 242 [2021-12-21 17:56:14,804 INFO L226 Difference]: Without dead ends: 242 [2021-12-21 17:56:14,804 INFO L932 BasicCegarLoop]: 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 [2021-12-21 17:56:14,805 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 233 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:14,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 271 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:14,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-12-21 17:56:14,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 208. [2021-12-21 17:56:14,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 160 states have (on average 1.51875) internal successors, (243), 207 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 243 transitions. [2021-12-21 17:56:14,810 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 243 transitions. Word has length 22 [2021-12-21 17:56:14,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:14,810 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 243 transitions. [2021-12-21 17:56:14,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,810 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 243 transitions. [2021-12-21 17:56:14,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-21 17:56:14,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:14,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:14,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 17:56:14,811 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:14,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:14,812 INFO L85 PathProgramCache]: Analyzing trace with hash 110847663, now seen corresponding path program 1 times [2021-12-21 17:56:14,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:14,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20365266] [2021-12-21 17:56:14,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:14,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:14,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:14,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:14,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20365266] [2021-12-21 17:56:14,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20365266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:14,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:14,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:56:14,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569122063] [2021-12-21 17:56:14,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:14,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:56:14,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:14,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:56:14,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:56:14,850 INFO L87 Difference]: Start difference. First operand 208 states and 243 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:14,956 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2021-12-21 17:56:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:56:14,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-21 17:56:14,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:14,957 INFO L225 Difference]: With dead ends: 207 [2021-12-21 17:56:14,957 INFO L226 Difference]: Without dead ends: 207 [2021-12-21 17:56:14,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 17:56:14,958 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 9 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:14,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 464 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:14,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-21 17:56:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-12-21 17:56:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 160 states have (on average 1.50625) internal successors, (241), 206 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 241 transitions. [2021-12-21 17:56:14,961 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 241 transitions. Word has length 23 [2021-12-21 17:56:14,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:14,961 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 241 transitions. [2021-12-21 17:56:14,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 241 transitions. [2021-12-21 17:56:14,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-21 17:56:14,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:14,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:14,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 17:56:14,962 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:14,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:14,963 INFO L85 PathProgramCache]: Analyzing trace with hash 110847664, now seen corresponding path program 1 times [2021-12-21 17:56:14,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:14,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373074912] [2021-12-21 17:56:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:14,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:15,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:15,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:15,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373074912] [2021-12-21 17:56:15,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373074912] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:15,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:15,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:56:15,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326766019] [2021-12-21 17:56:15,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:15,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:56:15,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:15,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:56:15,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:56:15,002 INFO L87 Difference]: Start difference. First operand 207 states and 241 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:15,122 INFO L93 Difference]: Finished difference Result 206 states and 239 transitions. [2021-12-21 17:56:15,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 17:56:15,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-21 17:56:15,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:15,123 INFO L225 Difference]: With dead ends: 206 [2021-12-21 17:56:15,123 INFO L226 Difference]: Without dead ends: 206 [2021-12-21 17:56:15,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 17:56:15,124 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 4 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:15,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 456 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:15,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-12-21 17:56:15,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-12-21 17:56:15,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 160 states have (on average 1.49375) internal successors, (239), 205 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 239 transitions. [2021-12-21 17:56:15,127 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 239 transitions. Word has length 23 [2021-12-21 17:56:15,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:15,127 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 239 transitions. [2021-12-21 17:56:15,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,128 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 239 transitions. [2021-12-21 17:56:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-21 17:56:15,128 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:15,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:15,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 17:56:15,128 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:15,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:15,129 INFO L85 PathProgramCache]: Analyzing trace with hash -398547279, now seen corresponding path program 1 times [2021-12-21 17:56:15,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:15,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348894741] [2021-12-21 17:56:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:15,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:15,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:15,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:15,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348894741] [2021-12-21 17:56:15,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348894741] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:15,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:15,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 17:56:15,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521174989] [2021-12-21 17:56:15,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:15,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 17:56:15,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:15,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 17:56:15,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 17:56:15,199 INFO L87 Difference]: Start difference. First operand 206 states and 239 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:15,427 INFO L93 Difference]: Finished difference Result 206 states and 238 transitions. [2021-12-21 17:56:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 17:56:15,428 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-21 17:56:15,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:15,428 INFO L225 Difference]: With dead ends: 206 [2021-12-21 17:56:15,428 INFO L226 Difference]: Without dead ends: 206 [2021-12-21 17:56:15,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-12-21 17:56:15,429 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 250 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:15,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 427 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 17:56:15,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-12-21 17:56:15,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 205. [2021-12-21 17:56:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 160 states have (on average 1.4875) internal successors, (238), 204 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 238 transitions. [2021-12-21 17:56:15,432 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 238 transitions. Word has length 27 [2021-12-21 17:56:15,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:15,432 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 238 transitions. [2021-12-21 17:56:15,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,432 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 238 transitions. [2021-12-21 17:56:15,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-21 17:56:15,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:15,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:15,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 17:56:15,433 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:15,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:15,433 INFO L85 PathProgramCache]: Analyzing trace with hash -398547278, now seen corresponding path program 1 times [2021-12-21 17:56:15,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:15,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277908540] [2021-12-21 17:56:15,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:15,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:15,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:15,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277908540] [2021-12-21 17:56:15,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277908540] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:15,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:15,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 17:56:15,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74900015] [2021-12-21 17:56:15,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:15,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 17:56:15,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:15,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 17:56:15,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-21 17:56:15,547 INFO L87 Difference]: Start difference. First operand 205 states and 238 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:15,833 INFO L93 Difference]: Finished difference Result 198 states and 230 transitions. [2021-12-21 17:56:15,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 17:56:15,834 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-21 17:56:15,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:15,834 INFO L225 Difference]: With dead ends: 198 [2021-12-21 17:56:15,834 INFO L226 Difference]: Without dead ends: 198 [2021-12-21 17:56:15,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2021-12-21 17:56:15,835 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 263 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:15,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 556 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 17:56:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-12-21 17:56:15,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 187. [2021-12-21 17:56:15,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 152 states have (on average 1.4407894736842106) internal successors, (219), 186 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 219 transitions. [2021-12-21 17:56:15,838 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 219 transitions. Word has length 27 [2021-12-21 17:56:15,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:15,838 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 219 transitions. [2021-12-21 17:56:15,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,838 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 219 transitions. [2021-12-21 17:56:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-21 17:56:15,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:15,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:15,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 17:56:15,838 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:15,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:15,839 INFO L85 PathProgramCache]: Analyzing trace with hash 329779259, now seen corresponding path program 1 times [2021-12-21 17:56:15,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:15,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576822444] [2021-12-21 17:56:15,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:15,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:15,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:15,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:15,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576822444] [2021-12-21 17:56:15,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576822444] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:15,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:15,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 17:56:15,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423484088] [2021-12-21 17:56:15,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:15,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:56:15,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:15,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:56:15,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:15,876 INFO L87 Difference]: Start difference. First operand 187 states and 219 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:15,880 INFO L93 Difference]: Finished difference Result 260 states and 307 transitions. [2021-12-21 17:56:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:56:15,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-21 17:56:15,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:15,882 INFO L225 Difference]: With dead ends: 260 [2021-12-21 17:56:15,882 INFO L226 Difference]: Without dead ends: 260 [2021-12-21 17:56:15,882 INFO L932 BasicCegarLoop]: 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 [2021-12-21 17:56:15,882 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 50 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:15,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 299 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:56:15,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-12-21 17:56:15,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 193. [2021-12-21 17:56:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 158 states have (on average 1.4367088607594938) internal successors, (227), 192 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 227 transitions. [2021-12-21 17:56:15,886 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 227 transitions. Word has length 28 [2021-12-21 17:56:15,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:15,886 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 227 transitions. [2021-12-21 17:56:15,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,886 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 227 transitions. [2021-12-21 17:56:15,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-21 17:56:15,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:15,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:15,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 17:56:15,886 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:15,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:15,887 INFO L85 PathProgramCache]: Analyzing trace with hash -751842895, now seen corresponding path program 1 times [2021-12-21 17:56:15,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:15,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379171532] [2021-12-21 17:56:15,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:15,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:15,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:15,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:15,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379171532] [2021-12-21 17:56:15,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379171532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:15,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:15,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:56:15,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246390774] [2021-12-21 17:56:15,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:15,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 17:56:15,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:15,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 17:56:15,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:56:15,963 INFO L87 Difference]: Start difference. First operand 193 states and 227 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:16,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:16,027 INFO L93 Difference]: Finished difference Result 193 states and 228 transitions. [2021-12-21 17:56:16,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:56:16,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-21 17:56:16,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:16,028 INFO L225 Difference]: With dead ends: 193 [2021-12-21 17:56:16,028 INFO L226 Difference]: Without dead ends: 193 [2021-12-21 17:56:16,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:56:16,028 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 347 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:16,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 226 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:16,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-12-21 17:56:16,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2021-12-21 17:56:16,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 156 states have (on average 1.4294871794871795) internal successors, (223), 188 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:16,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 223 transitions. [2021-12-21 17:56:16,031 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 223 transitions. Word has length 29 [2021-12-21 17:56:16,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:16,031 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 223 transitions. [2021-12-21 17:56:16,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:16,031 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 223 transitions. [2021-12-21 17:56:16,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-21 17:56:16,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:16,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:16,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 17:56:16,033 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:16,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:16,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1633211075, now seen corresponding path program 1 times [2021-12-21 17:56:16,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:16,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541835326] [2021-12-21 17:56:16,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:16,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:16,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:16,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541835326] [2021-12-21 17:56:16,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541835326] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:16,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:16,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 17:56:16,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226265533] [2021-12-21 17:56:16,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:16,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:56:16,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:16,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:56:16,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:16,074 INFO L87 Difference]: Start difference. First operand 189 states and 223 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:16,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:16,083 INFO L93 Difference]: Finished difference Result 187 states and 220 transitions. [2021-12-21 17:56:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:56:16,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-21 17:56:16,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:16,084 INFO L225 Difference]: With dead ends: 187 [2021-12-21 17:56:16,084 INFO L226 Difference]: Without dead ends: 187 [2021-12-21 17:56:16,084 INFO L932 BasicCegarLoop]: 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 [2021-12-21 17:56:16,085 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 20 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:16,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 262 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:56:16,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-12-21 17:56:16,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-12-21 17:56:16,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 155 states have (on average 1.4193548387096775) internal successors, (220), 186 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:16,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 220 transitions. [2021-12-21 17:56:16,091 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 220 transitions. Word has length 29 [2021-12-21 17:56:16,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:16,091 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 220 transitions. [2021-12-21 17:56:16,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:16,091 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 220 transitions. [2021-12-21 17:56:16,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-21 17:56:16,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:16,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:16,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 17:56:16,093 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:16,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:16,093 INFO L85 PathProgramCache]: Analyzing trace with hash -910059888, now seen corresponding path program 1 times [2021-12-21 17:56:16,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:16,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114945230] [2021-12-21 17:56:16,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:16,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:16,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:16,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114945230] [2021-12-21 17:56:16,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114945230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:16,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:16,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 17:56:16,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197029987] [2021-12-21 17:56:16,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:16,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 17:56:16,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:16,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 17:56:16,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 17:56:16,205 INFO L87 Difference]: Start difference. First operand 187 states and 220 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:16,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:16,474 INFO L93 Difference]: Finished difference Result 290 states and 320 transitions. [2021-12-21 17:56:16,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 17:56:16,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-21 17:56:16,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:16,476 INFO L225 Difference]: With dead ends: 290 [2021-12-21 17:56:16,476 INFO L226 Difference]: Without dead ends: 290 [2021-12-21 17:56:16,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 17:56:16,477 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 377 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:16,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 804 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 17:56:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-12-21 17:56:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 199. [2021-12-21 17:56:16,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 167 states have (on average 1.3952095808383234) internal successors, (233), 198 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:16,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 233 transitions. [2021-12-21 17:56:16,482 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 233 transitions. Word has length 30 [2021-12-21 17:56:16,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:16,482 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 233 transitions. [2021-12-21 17:56:16,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:16,482 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 233 transitions. [2021-12-21 17:56:16,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-21 17:56:16,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:16,483 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:16,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-21 17:56:16,483 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:16,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:16,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2071508259, now seen corresponding path program 1 times [2021-12-21 17:56:16,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:16,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900097133] [2021-12-21 17:56:16,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:16,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:16,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:16,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900097133] [2021-12-21 17:56:16,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900097133] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 17:56:16,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239557940] [2021-12-21 17:56:16,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:16,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 17:56:16,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 17:56:16,561 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) [2021-12-21 17:56:16,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 17:56:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:16,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-21 17:56:16,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 17:56:16,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 17:56:16,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 17:56:16,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 17:56:16,742 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 21 treesize of output 20 [2021-12-21 17:56:16,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 17:56:16,746 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 21 treesize of output 20 [2021-12-21 17:56:16,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 17:56:16,784 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 21 treesize of output 20 [2021-12-21 17:56:16,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 17:56:16,790 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 21 treesize of output 20 [2021-12-21 17:56:16,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 17:56:16,943 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-21 17:56:16,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 17:56:16,949 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 17:56:16,949 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 10 [2021-12-21 17:56:16,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:16,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 17:56:17,540 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 19 [2021-12-21 17:56:17,542 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 17 [2021-12-21 17:56:17,545 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 21 [2021-12-21 17:56:17,572 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 20 [2021-12-21 17:56:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:17,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239557940] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 17:56:17,585 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 17:56:17,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2021-12-21 17:56:17,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903052473] [2021-12-21 17:56:17,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 17:56:17,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 17:56:17,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:17,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 17:56:17,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-21 17:56:17,586 INFO L87 Difference]: Start difference. First operand 199 states and 233 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:17,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:17,774 INFO L93 Difference]: Finished difference Result 286 states and 316 transitions. [2021-12-21 17:56:17,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 17:56:17,775 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-21 17:56:17,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:17,775 INFO L225 Difference]: With dead ends: 286 [2021-12-21 17:56:17,775 INFO L226 Difference]: Without dead ends: 286 [2021-12-21 17:56:17,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-21 17:56:17,776 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 481 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:17,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 739 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 305 Invalid, 0 Unknown, 46 Unchecked, 0.1s Time] [2021-12-21 17:56:17,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-12-21 17:56:17,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 227. [2021-12-21 17:56:17,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 195 states have (on average 1.405128205128205) internal successors, (274), 226 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:17,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 274 transitions. [2021-12-21 17:56:17,779 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 274 transitions. Word has length 32 [2021-12-21 17:56:17,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:17,779 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 274 transitions. [2021-12-21 17:56:17,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:17,780 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 274 transitions. [2021-12-21 17:56:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-21 17:56:17,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:17,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:17,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 17:56:17,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-21 17:56:17,987 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:17,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:17,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1393921825, now seen corresponding path program 1 times [2021-12-21 17:56:17,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:17,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276096541] [2021-12-21 17:56:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:17,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:18,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:18,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:18,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276096541] [2021-12-21 17:56:18,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276096541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:18,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:18,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 17:56:18,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880247574] [2021-12-21 17:56:18,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:18,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 17:56:18,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:18,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 17:56:18,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-21 17:56:18,097 INFO L87 Difference]: Start difference. First operand 227 states and 274 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:18,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:18,544 INFO L93 Difference]: Finished difference Result 334 states and 372 transitions. [2021-12-21 17:56:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 17:56:18,545 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-21 17:56:18,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:18,546 INFO L225 Difference]: With dead ends: 334 [2021-12-21 17:56:18,546 INFO L226 Difference]: Without dead ends: 334 [2021-12-21 17:56:18,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-12-21 17:56:18,546 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 387 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:18,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 919 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 17:56:18,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-12-21 17:56:18,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 228. [2021-12-21 17:56:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 198 states have (on average 1.3737373737373737) internal successors, (272), 227 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:18,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 272 transitions. [2021-12-21 17:56:18,549 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 272 transitions. Word has length 35 [2021-12-21 17:56:18,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:18,550 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 272 transitions. [2021-12-21 17:56:18,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:18,550 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 272 transitions. [2021-12-21 17:56:18,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-21 17:56:18,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:18,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:18,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-21 17:56:18,550 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr56REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:18,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:18,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1393921826, now seen corresponding path program 1 times [2021-12-21 17:56:18,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:18,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096765788] [2021-12-21 17:56:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:18,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:18,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:18,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096765788] [2021-12-21 17:56:18,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096765788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:18,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:18,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 17:56:18,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174968362] [2021-12-21 17:56:18,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:18,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 17:56:18,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:18,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 17:56:18,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-21 17:56:18,729 INFO L87 Difference]: Start difference. First operand 228 states and 272 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:19,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:19,259 INFO L93 Difference]: Finished difference Result 400 states and 432 transitions. [2021-12-21 17:56:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-21 17:56:19,259 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-21 17:56:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:19,260 INFO L225 Difference]: With dead ends: 400 [2021-12-21 17:56:19,260 INFO L226 Difference]: Without dead ends: 400 [2021-12-21 17:56:19,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2021-12-21 17:56:19,261 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 580 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:19,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 990 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 17:56:19,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-12-21 17:56:19,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 234. [2021-12-21 17:56:19,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 204 states have (on average 1.3676470588235294) internal successors, (279), 233 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:19,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 279 transitions. [2021-12-21 17:56:19,265 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 279 transitions. Word has length 35 [2021-12-21 17:56:19,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:19,265 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 279 transitions. [2021-12-21 17:56:19,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:19,265 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 279 transitions. [2021-12-21 17:56:19,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-21 17:56:19,265 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:19,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:19,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-21 17:56:19,266 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:19,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:19,266 INFO L85 PathProgramCache]: Analyzing trace with hash -470914463, now seen corresponding path program 1 times [2021-12-21 17:56:19,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:19,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887971626] [2021-12-21 17:56:19,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:19,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:19,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:19,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887971626] [2021-12-21 17:56:19,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887971626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:19,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:19,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-21 17:56:19,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156707246] [2021-12-21 17:56:19,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:19,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 17:56:19,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:19,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 17:56:19,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-12-21 17:56:19,527 INFO L87 Difference]: Start difference. First operand 234 states and 279 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:20,569 INFO L93 Difference]: Finished difference Result 331 states and 362 transitions. [2021-12-21 17:56:20,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-21 17:56:20,569 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-21 17:56:20,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:20,571 INFO L225 Difference]: With dead ends: 331 [2021-12-21 17:56:20,571 INFO L226 Difference]: Without dead ends: 331 [2021-12-21 17:56:20,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=259, Invalid=1001, Unknown=0, NotChecked=0, Total=1260 [2021-12-21 17:56:20,575 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 565 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:20,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 1078 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 17:56:20,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-12-21 17:56:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 234. [2021-12-21 17:56:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 204 states have (on average 1.3627450980392157) internal successors, (278), 233 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 278 transitions. [2021-12-21 17:56:20,582 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 278 transitions. Word has length 37 [2021-12-21 17:56:20,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:20,582 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 278 transitions. [2021-12-21 17:56:20,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:20,583 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 278 transitions. [2021-12-21 17:56:20,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-21 17:56:20,583 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:20,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:20,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-21 17:56:20,583 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:20,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:20,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2012362969, now seen corresponding path program 1 times [2021-12-21 17:56:20,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:20,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197277823] [2021-12-21 17:56:20,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:20,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:20,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:20,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197277823] [2021-12-21 17:56:20,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197277823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:20,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:20,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:56:20,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603246148] [2021-12-21 17:56:20,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:20,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:56:20,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:20,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:56:20,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:56:20,632 INFO L87 Difference]: Start difference. First operand 234 states and 278 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:20,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:20,734 INFO L93 Difference]: Finished difference Result 233 states and 277 transitions. [2021-12-21 17:56:20,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 17:56:20,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-21 17:56:20,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:20,735 INFO L225 Difference]: With dead ends: 233 [2021-12-21 17:56:20,735 INFO L226 Difference]: Without dead ends: 233 [2021-12-21 17:56:20,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 17:56:20,736 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 4 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:20,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 413 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:20,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-12-21 17:56:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-12-21 17:56:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 204 states have (on average 1.357843137254902) internal successors, (277), 232 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:20,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 277 transitions. [2021-12-21 17:56:20,741 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 277 transitions. Word has length 37 [2021-12-21 17:56:20,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:20,741 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 277 transitions. [2021-12-21 17:56:20,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:20,741 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 277 transitions. [2021-12-21 17:56:20,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-21 17:56:20,741 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:20,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:20,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-21 17:56:20,742 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:20,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:20,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2012362968, now seen corresponding path program 1 times [2021-12-21 17:56:20,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:20,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126592629] [2021-12-21 17:56:20,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:20,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:20,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:20,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126592629] [2021-12-21 17:56:20,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126592629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:20,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:20,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:56:20,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765731295] [2021-12-21 17:56:20,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:20,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:56:20,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:20,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:56:20,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:56:20,791 INFO L87 Difference]: Start difference. First operand 233 states and 277 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:20,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:20,927 INFO L93 Difference]: Finished difference Result 232 states and 276 transitions. [2021-12-21 17:56:20,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 17:56:20,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-21 17:56:20,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:20,928 INFO L225 Difference]: With dead ends: 232 [2021-12-21 17:56:20,928 INFO L226 Difference]: Without dead ends: 232 [2021-12-21 17:56:20,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 17:56:20,929 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 2 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:20,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 410 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:20,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-12-21 17:56:20,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-12-21 17:56:20,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 204 states have (on average 1.3529411764705883) internal successors, (276), 231 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 276 transitions. [2021-12-21 17:56:20,932 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 276 transitions. Word has length 37 [2021-12-21 17:56:20,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:20,932 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 276 transitions. [2021-12-21 17:56:20,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:20,932 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 276 transitions. [2021-12-21 17:56:20,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-21 17:56:20,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:20,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:20,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-21 17:56:20,933 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:20,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:20,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1939172976, now seen corresponding path program 1 times [2021-12-21 17:56:20,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:20,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208268381] [2021-12-21 17:56:20,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:20,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 17:56:20,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:20,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208268381] [2021-12-21 17:56:20,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208268381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:20,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:20,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 17:56:20,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478154584] [2021-12-21 17:56:20,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:20,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 17:56:20,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:20,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 17:56:20,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 17:56:20,986 INFO L87 Difference]: Start difference. First operand 232 states and 276 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:21,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:21,176 INFO L93 Difference]: Finished difference Result 248 states and 292 transitions. [2021-12-21 17:56:21,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 17:56:21,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-21 17:56:21,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:21,177 INFO L225 Difference]: With dead ends: 248 [2021-12-21 17:56:21,177 INFO L226 Difference]: Without dead ends: 248 [2021-12-21 17:56:21,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-21 17:56:21,178 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 49 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:21,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 621 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 17:56:21,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-12-21 17:56:21,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 241. [2021-12-21 17:56:21,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 213 states have (on average 1.3380281690140845) internal successors, (285), 240 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:21,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 285 transitions. [2021-12-21 17:56:21,181 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 285 transitions. Word has length 37 [2021-12-21 17:56:21,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:21,182 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 285 transitions. [2021-12-21 17:56:21,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:21,182 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 285 transitions. [2021-12-21 17:56:21,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-21 17:56:21,182 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:21,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:21,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-21 17:56:21,183 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:21,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:21,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1413983143, now seen corresponding path program 1 times [2021-12-21 17:56:21,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:21,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415792301] [2021-12-21 17:56:21,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:21,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:21,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:21,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415792301] [2021-12-21 17:56:21,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415792301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:21,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:21,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 17:56:21,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413542758] [2021-12-21 17:56:21,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:21,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:56:21,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:21,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:56:21,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:21,205 INFO L87 Difference]: Start difference. First operand 241 states and 285 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:21,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:21,210 INFO L93 Difference]: Finished difference Result 242 states and 286 transitions. [2021-12-21 17:56:21,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:56:21,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-12-21 17:56:21,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:21,211 INFO L225 Difference]: With dead ends: 242 [2021-12-21 17:56:21,211 INFO L226 Difference]: Without dead ends: 242 [2021-12-21 17:56:21,211 INFO L932 BasicCegarLoop]: 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 [2021-12-21 17:56:21,211 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:21,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:56:21,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-12-21 17:56:21,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-12-21 17:56:21,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 214 states have (on average 1.3364485981308412) internal successors, (286), 241 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:21,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 286 transitions. [2021-12-21 17:56:21,214 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 286 transitions. Word has length 39 [2021-12-21 17:56:21,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:21,215 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 286 transitions. [2021-12-21 17:56:21,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:21,215 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 286 transitions. [2021-12-21 17:56:21,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-21 17:56:21,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:21,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:21,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-21 17:56:21,216 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr81ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:21,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:21,216 INFO L85 PathProgramCache]: Analyzing trace with hash -407701739, now seen corresponding path program 1 times [2021-12-21 17:56:21,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:21,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136426574] [2021-12-21 17:56:21,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:21,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 17:56:21,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:21,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136426574] [2021-12-21 17:56:21,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136426574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:21,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:21,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 17:56:21,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16467556] [2021-12-21 17:56:21,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:21,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:56:21,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:21,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:56:21,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:21,236 INFO L87 Difference]: Start difference. First operand 242 states and 286 transitions. Second operand has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:21,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:21,258 INFO L93 Difference]: Finished difference Result 255 states and 290 transitions. [2021-12-21 17:56:21,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:56:21,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-12-21 17:56:21,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:21,259 INFO L225 Difference]: With dead ends: 255 [2021-12-21 17:56:21,259 INFO L226 Difference]: Without dead ends: 255 [2021-12-21 17:56:21,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:21,260 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 98 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:21,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 151 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:56:21,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-12-21 17:56:21,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 243. [2021-12-21 17:56:21,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 215 states have (on average 1.3348837209302327) internal successors, (287), 242 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 287 transitions. [2021-12-21 17:56:21,263 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 287 transitions. Word has length 39 [2021-12-21 17:56:21,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:21,264 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 287 transitions. [2021-12-21 17:56:21,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 287 transitions. [2021-12-21 17:56:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-21 17:56:21,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:21,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:21,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-21 17:56:21,265 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-12-21 17:56:21,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:21,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1645380794, now seen corresponding path program 1 times [2021-12-21 17:56:21,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:21,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442445284] [2021-12-21 17:56:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:21,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 17:56:21,281 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 17:56:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 17:56:21,303 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 17:56:21,303 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 17:56:21,304 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK (83 of 84 remaining) [2021-12-21 17:56:21,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (82 of 84 remaining) [2021-12-21 17:56:21,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (81 of 84 remaining) [2021-12-21 17:56:21,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (80 of 84 remaining) [2021-12-21 17:56:21,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (79 of 84 remaining) [2021-12-21 17:56:21,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (78 of 84 remaining) [2021-12-21 17:56:21,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (77 of 84 remaining) [2021-12-21 17:56:21,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (76 of 84 remaining) [2021-12-21 17:56:21,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (75 of 84 remaining) [2021-12-21 17:56:21,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (74 of 84 remaining) [2021-12-21 17:56:21,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (73 of 84 remaining) [2021-12-21 17:56:21,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (72 of 84 remaining) [2021-12-21 17:56:21,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (71 of 84 remaining) [2021-12-21 17:56:21,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (70 of 84 remaining) [2021-12-21 17:56:21,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (69 of 84 remaining) [2021-12-21 17:56:21,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (68 of 84 remaining) [2021-12-21 17:56:21,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (67 of 84 remaining) [2021-12-21 17:56:21,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (66 of 84 remaining) [2021-12-21 17:56:21,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (65 of 84 remaining) [2021-12-21 17:56:21,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (64 of 84 remaining) [2021-12-21 17:56:21,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (63 of 84 remaining) [2021-12-21 17:56:21,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (62 of 84 remaining) [2021-12-21 17:56:21,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK (61 of 84 remaining) [2021-12-21 17:56:21,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (60 of 84 remaining) [2021-12-21 17:56:21,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (59 of 84 remaining) [2021-12-21 17:56:21,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (58 of 84 remaining) [2021-12-21 17:56:21,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (57 of 84 remaining) [2021-12-21 17:56:21,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (56 of 84 remaining) [2021-12-21 17:56:21,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (55 of 84 remaining) [2021-12-21 17:56:21,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (54 of 84 remaining) [2021-12-21 17:56:21,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (53 of 84 remaining) [2021-12-21 17:56:21,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (52 of 84 remaining) [2021-12-21 17:56:21,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION (51 of 84 remaining) [2021-12-21 17:56:21,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK (50 of 84 remaining) [2021-12-21 17:56:21,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK (49 of 84 remaining) [2021-12-21 17:56:21,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION (48 of 84 remaining) [2021-12-21 17:56:21,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION (47 of 84 remaining) [2021-12-21 17:56:21,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION (46 of 84 remaining) [2021-12-21 17:56:21,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION (45 of 84 remaining) [2021-12-21 17:56:21,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION (44 of 84 remaining) [2021-12-21 17:56:21,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION (43 of 84 remaining) [2021-12-21 17:56:21,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION (42 of 84 remaining) [2021-12-21 17:56:21,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION (41 of 84 remaining) [2021-12-21 17:56:21,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION (40 of 84 remaining) [2021-12-21 17:56:21,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION (39 of 84 remaining) [2021-12-21 17:56:21,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION (38 of 84 remaining) [2021-12-21 17:56:21,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION (37 of 84 remaining) [2021-12-21 17:56:21,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION (36 of 84 remaining) [2021-12-21 17:56:21,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION (35 of 84 remaining) [2021-12-21 17:56:21,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION (34 of 84 remaining) [2021-12-21 17:56:21,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION (33 of 84 remaining) [2021-12-21 17:56:21,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK (32 of 84 remaining) [2021-12-21 17:56:21,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK (31 of 84 remaining) [2021-12-21 17:56:21,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATION (30 of 84 remaining) [2021-12-21 17:56:21,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATION (29 of 84 remaining) [2021-12-21 17:56:21,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK (28 of 84 remaining) [2021-12-21 17:56:21,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATION (27 of 84 remaining) [2021-12-21 17:56:21,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56REQUIRES_VIOLATION (26 of 84 remaining) [2021-12-21 17:56:21,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_LEAK (25 of 84 remaining) [2021-12-21 17:56:21,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58REQUIRES_VIOLATION (24 of 84 remaining) [2021-12-21 17:56:21,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59REQUIRES_VIOLATION (23 of 84 remaining) [2021-12-21 17:56:21,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61REQUIRES_VIOLATION (22 of 84 remaining) [2021-12-21 17:56:21,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62REQUIRES_VIOLATION (21 of 84 remaining) [2021-12-21 17:56:21,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK (20 of 84 remaining) [2021-12-21 17:56:21,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64REQUIRES_VIOLATION (19 of 84 remaining) [2021-12-21 17:56:21,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65REQUIRES_VIOLATION (18 of 84 remaining) [2021-12-21 17:56:21,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66REQUIRES_VIOLATION (17 of 84 remaining) [2021-12-21 17:56:21,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67REQUIRES_VIOLATION (16 of 84 remaining) [2021-12-21 17:56:21,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_LEAK (15 of 84 remaining) [2021-12-21 17:56:21,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69REQUIRES_VIOLATION (14 of 84 remaining) [2021-12-21 17:56:21,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr70REQUIRES_VIOLATION (13 of 84 remaining) [2021-12-21 17:56:21,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr71ASSERT_VIOLATIONMEMORY_LEAK (12 of 84 remaining) [2021-12-21 17:56:21,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr72REQUIRES_VIOLATION (11 of 84 remaining) [2021-12-21 17:56:21,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr73REQUIRES_VIOLATION (10 of 84 remaining) [2021-12-21 17:56:21,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr74ASSERT_VIOLATIONMEMORY_LEAK (9 of 84 remaining) [2021-12-21 17:56:21,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_FREE (8 of 84 remaining) [2021-12-21 17:56:21,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_FREE (7 of 84 remaining) [2021-12-21 17:56:21,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_FREE (6 of 84 remaining) [2021-12-21 17:56:21,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr78REQUIRES_VIOLATION (5 of 84 remaining) [2021-12-21 17:56:21,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr79REQUIRES_VIOLATION (4 of 84 remaining) [2021-12-21 17:56:21,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr80ASSERT_VIOLATIONMEMORY_FREE (3 of 84 remaining) [2021-12-21 17:56:21,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr81ASSERT_VIOLATIONMEMORY_FREE (2 of 84 remaining) [2021-12-21 17:56:21,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr82ASSERT_VIOLATIONMEMORY_FREE (1 of 84 remaining) [2021-12-21 17:56:21,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr83ASSERT_VIOLATIONMEMORY_LEAK (0 of 84 remaining) [2021-12-21 17:56:21,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-21 17:56:21,317 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:21,320 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 17:56:21,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 05:56:21 BoogieIcfgContainer [2021-12-21 17:56:21,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 17:56:21,341 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 17:56:21,341 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 17:56:21,341 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 17:56:21,341 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:56:12" (3/4) ... [2021-12-21 17:56:21,342 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-21 17:56:21,365 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 17:56:21,365 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 17:56:21,366 INFO L158 Benchmark]: Toolchain (without parser) took 10492.07ms. Allocated memory was 144.7MB in the beginning and 218.1MB in the end (delta: 73.4MB). Free memory was 113.9MB in the beginning and 79.2MB in the end (delta: 34.7MB). Peak memory consumption was 107.4MB. Max. memory is 16.1GB. [2021-12-21 17:56:21,366 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 50.0MB in the beginning and 49.9MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 17:56:21,366 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.88ms. Allocated memory is still 144.7MB. Free memory was 113.3MB in the beginning and 111.8MB in the end (delta: 1.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 17:56:21,366 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.04ms. Allocated memory is still 144.7MB. Free memory was 111.8MB in the beginning and 108.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-21 17:56:21,366 INFO L158 Benchmark]: Boogie Preprocessor took 49.56ms. Allocated memory is still 144.7MB. Free memory was 108.3MB in the beginning and 106.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 17:56:21,366 INFO L158 Benchmark]: RCFGBuilder took 578.80ms. Allocated memory is still 144.7MB. Free memory was 106.2MB in the beginning and 81.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-21 17:56:21,367 INFO L158 Benchmark]: TraceAbstraction took 9306.00ms. Allocated memory was 144.7MB in the beginning and 218.1MB in the end (delta: 73.4MB). Free memory was 80.4MB in the beginning and 82.3MB in the end (delta: -1.9MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. [2021-12-21 17:56:21,367 INFO L158 Benchmark]: Witness Printer took 24.56ms. Allocated memory is still 218.1MB. Free memory was 82.3MB in the beginning and 79.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 17:56:21,368 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 50.0MB in the beginning and 49.9MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 460.88ms. Allocated memory is still 144.7MB. Free memory was 113.3MB in the beginning and 111.8MB in the end (delta: 1.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.04ms. Allocated memory is still 144.7MB. Free memory was 111.8MB in the beginning and 108.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.56ms. Allocated memory is still 144.7MB. Free memory was 108.3MB in the beginning and 106.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 578.80ms. Allocated memory is still 144.7MB. Free memory was 106.2MB in the beginning and 81.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 9306.00ms. Allocated memory was 144.7MB in the beginning and 218.1MB in the end (delta: 73.4MB). Free memory was 80.4MB in the beginning and 82.3MB in the end (delta: -1.9MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. * Witness Printer took 24.56ms. Allocated memory is still 218.1MB. Free memory was 82.3MB in the beginning and 79.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1040]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1003] SLL* list = malloc(sizeof(SLL)); [L1004] list->next = ((void*)0) VAL [list={-1:0}] [L1005] list->prev = ((void*)0) VAL [list={-1:0}] [L1006] COND FALSE !(!(list != ((void*)0))) VAL [list={-1:0}] [L1006] COND FALSE !(__VERIFIER_nondet_int()) [L1006] list->inner = malloc(sizeof(SLL)) VAL [list={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1006] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}] [L1006] list->inner->next = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}] [L1006] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}] [L1006] list->inner->inner = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}] [L1006] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}] [L1006] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1] [L1006] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L1008] SLL* end = list; VAL [end={-1:0}, list={-1:0}] [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1022] end = ((void*)0) [L1023] end = list VAL [end={-1:0}, list={-1:0}] [L1026] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}] [L1028] COND TRUE ((void*)0) != end [L1030] int len = 0; VAL [end={-1:0}, len=0, list={-1:0}] [L1031] EXPR end->inner VAL [end={-1:0}, end->inner={-2:0}, len=0, list={-1:0}] [L1031] SLL* inner = end->inner; [L1032] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}] [L1034] COND TRUE len == 0 [L1035] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}] [L1038] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}] [L1039] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}] [L1039] COND FALSE !(!(((void*)0) == inner->inner)) [L1040] EXPR inner->next VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}] [L1040] COND TRUE !(((void*)0) != inner->next) [L1040] reach_error() VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}] - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1055]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1057]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1057]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1057]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 200 locations, 84 error locations. Started 1 CEGAR loops. OverallTime: 9.2s, OverallIterations: 31, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5616 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5616 mSDsluCounter, 13981 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 46 IncrementalHoareTripleChecker+Unchecked, 9940 mSDsCounter, 356 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7312 IncrementalHoareTripleChecker+Invalid, 7714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 356 mSolverCounterUnsat, 4041 mSDtfsCounter, 7312 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 351 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=30, InterpolantAutomatonStates: 233, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 30 MinimizatonAttempts, 919 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 792 NumberOfCodeBlocks, 792 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 752 ConstructedInterpolants, 17 QuantifiedInterpolants, 6485 SizeOfPredicates, 9 NumberOfNonLiveVariables, 159 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 32 InterpolantComputations, 29 PerfectInterpolantSequences, 5/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-21 17:56:21,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)