/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:20:03,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:20:03,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:20:03,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:20:03,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:20:03,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:20:03,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:20:03,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:20:03,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:20:03,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:20:03,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:20:03,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:20:03,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:20:03,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:20:03,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:20:03,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:20:03,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:20:03,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:20:03,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:20:03,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:20:03,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:20:03,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:20:03,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:20:03,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:20:03,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:20:03,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:20:03,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:20:03,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:20:03,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:20:03,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:20:03,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:20:03,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:20:03,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:20:03,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:20:03,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:20:03,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:20:03,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:20:03,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:20:03,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:20:03,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:20:03,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:20:03,267 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:20:03,295 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:20:03,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:20:03,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:20:03,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:20:03,298 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:20:03,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:20:03,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:20:03,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:20:03,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:20:03,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:20:03,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:20:03,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:20:03,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:20:03,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:20:03,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:20:03,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:20:03,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:20:03,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:20:03,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:20:03,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:20:03,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:20:03,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:20:03,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:20:03,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:20:03,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:20:03,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:20:03,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:20:03,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:20:03,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:20:03,759 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:20:03,759 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:20:03,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2020-12-22 13:20:03,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89b480286/9f7af824dd604a699a66bb4aa89c2c73/FLAGd4c56da30 [2020-12-22 13:20:04,877 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:20:04,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2020-12-22 13:20:04,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89b480286/9f7af824dd604a699a66bb4aa89c2c73/FLAGd4c56da30 [2020-12-22 13:20:05,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89b480286/9f7af824dd604a699a66bb4aa89c2c73 [2020-12-22 13:20:05,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:20:05,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:20:05,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:20:05,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:20:05,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:20:05,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:20:05" (1/1) ... [2020-12-22 13:20:05,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23553d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:05, skipping insertion in model container [2020-12-22 13:20:05,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:20:05" (1/1) ... [2020-12-22 13:20:05,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:20:05,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:20:06,536 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2020-12-22 13:20:07,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:20:07,342 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:20:07,515 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2020-12-22 13:20:07,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:20:08,069 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:20:08,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:08 WrapperNode [2020-12-22 13:20:08,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:20:08,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:20:08,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:20:08,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:20:08,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:08" (1/1) ... [2020-12-22 13:20:08,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:08" (1/1) ... [2020-12-22 13:20:08,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:20:08,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:20:08,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:20:08,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:20:08,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:08" (1/1) ... [2020-12-22 13:20:08,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:08" (1/1) ... [2020-12-22 13:20:09,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:08" (1/1) ... [2020-12-22 13:20:09,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:08" (1/1) ... [2020-12-22 13:20:09,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:08" (1/1) ... [2020-12-22 13:20:09,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:08" (1/1) ... [2020-12-22 13:20:09,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:08" (1/1) ... [2020-12-22 13:20:10,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:20:10,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:20:10,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:20:10,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:20:10,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:20:10,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:20:10,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:20:10,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:20:10,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:20:10,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:20:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:20:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:20:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:20:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:20:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:20:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:20:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:20:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:20:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:20:10,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:24:16,132 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:24:16,133 INFO L299 CfgBuilder]: Removed 3056 assume(true) statements. [2020-12-22 13:24:16,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:24:16 BoogieIcfgContainer [2020-12-22 13:24:16,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:24:16,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:24:16,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:24:16,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:24:16,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:20:05" (1/3) ... [2020-12-22 13:24:16,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6aa1f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:24:16, skipping insertion in model container [2020-12-22 13:24:16,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:08" (2/3) ... [2020-12-22 13:24:16,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6aa1f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:24:16, skipping insertion in model container [2020-12-22 13:24:16,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:24:16" (3/3) ... [2020-12-22 13:24:16,148 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2020-12-22 13:24:16,155 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:24:16,163 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 13:24:16,184 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 13:24:16,223 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:24:16,224 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:24:16,224 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:24:16,224 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:24:16,224 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:24:16,224 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:24:16,225 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:24:16,225 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:24:16,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states. [2020-12-22 13:24:16,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 13:24:16,290 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:16,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:24:16,291 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:16,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:16,298 INFO L82 PathProgramCache]: Analyzing trace with hash -745159078, now seen corresponding path program 1 times [2020-12-22 13:24:16,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:16,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958203133] [2020-12-22 13:24:16,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:24:17,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958203133] [2020-12-22 13:24:17,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:17,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:24:17,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627090935] [2020-12-22 13:24:17,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:24:17,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:17,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:24:17,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:24:17,195 INFO L87 Difference]: Start difference. First operand 2582 states. Second operand 3 states. [2020-12-22 13:24:19,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:19,727 INFO L93 Difference]: Finished difference Result 7698 states and 10987 transitions. [2020-12-22 13:24:19,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:24:19,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 13:24:19,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:19,783 INFO L225 Difference]: With dead ends: 7698 [2020-12-22 13:24:19,784 INFO L226 Difference]: Without dead ends: 5089 [2020-12-22 13:24:19,799 INFO L677 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 [2020-12-22 13:24:19,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5089 states. [2020-12-22 13:24:20,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5089 to 5089. [2020-12-22 13:24:20,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5089 states. [2020-12-22 13:24:20,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 6680 transitions. [2020-12-22 13:24:20,063 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 6680 transitions. Word has length 22 [2020-12-22 13:24:20,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:20,063 INFO L481 AbstractCegarLoop]: Abstraction has 5089 states and 6680 transitions. [2020-12-22 13:24:20,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:24:20,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 6680 transitions. [2020-12-22 13:24:20,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 13:24:20,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:20,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:24:20,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:24:20,074 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:20,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:20,075 INFO L82 PathProgramCache]: Analyzing trace with hash -601537533, now seen corresponding path program 1 times [2020-12-22 13:24:20,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:20,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611001417] [2020-12-22 13:24:20,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:24:20,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611001417] [2020-12-22 13:24:20,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:20,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:24:20,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488851414] [2020-12-22 13:24:20,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:24:20,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:20,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:24:20,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:24:20,370 INFO L87 Difference]: Start difference. First operand 5089 states and 6680 transitions. Second operand 5 states. [2020-12-22 13:24:21,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:21,942 INFO L93 Difference]: Finished difference Result 15229 states and 19997 transitions. [2020-12-22 13:24:21,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:24:21,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-12-22 13:24:21,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:21,998 INFO L225 Difference]: With dead ends: 15229 [2020-12-22 13:24:21,998 INFO L226 Difference]: Without dead ends: 10153 [2020-12-22 13:24:22,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:24:22,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10153 states. [2020-12-22 13:24:22,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10153 to 10089. [2020-12-22 13:24:22,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10089 states. [2020-12-22 13:24:22,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10089 states to 10089 states and 13233 transitions. [2020-12-22 13:24:22,371 INFO L78 Accepts]: Start accepts. Automaton has 10089 states and 13233 transitions. Word has length 25 [2020-12-22 13:24:22,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:22,372 INFO L481 AbstractCegarLoop]: Abstraction has 10089 states and 13233 transitions. [2020-12-22 13:24:22,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:24:22,373 INFO L276 IsEmpty]: Start isEmpty. Operand 10089 states and 13233 transitions. [2020-12-22 13:24:22,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 13:24:22,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:22,392 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:24:22,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:24:22,392 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:22,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:22,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1521844101, now seen corresponding path program 1 times [2020-12-22 13:24:22,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:22,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595829813] [2020-12-22 13:24:22,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:24:22,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595829813] [2020-12-22 13:24:22,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:22,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:24:22,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807875487] [2020-12-22 13:24:22,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:24:22,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:22,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:24:22,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:24:22,719 INFO L87 Difference]: Start difference. First operand 10089 states and 13233 transitions. Second operand 4 states.