./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7001fc39e766418166b5245dd523731096962c63b3f1d8b8399a7fc1e7a88c5f --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:47:06,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:47:06,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:47:06,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:47:06,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:47:06,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:47:06,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:47:06,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:47:06,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:47:06,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:47:06,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:47:06,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:47:06,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:47:06,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:47:06,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:47:06,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:47:06,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:47:06,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:47:06,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:47:06,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:47:06,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:47:06,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:47:06,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:47:06,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:47:06,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:47:06,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:47:06,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:47:06,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:47:06,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:47:06,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:47:06,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:47:06,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:47:06,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:47:06,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:47:06,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:47:06,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:47:06,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:47:06,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:47:06,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:47:06,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:47:06,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:47:06,242 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:47:06,271 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:47:06,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:47:06,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:47:06,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:47:06,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:47:06,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:47:06,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:47:06,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:47:06,275 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:47:06,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:47:06,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:47:06,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:47:06,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:47:06,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:47:06,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:47:06,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:47:06,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:47:06,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:47:06,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:47:06,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:47:06,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:47:06,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:47:06,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:47:06,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:47:06,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:47:06,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:47:06,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:47:06,278 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:47:06,279 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:47:06,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:47:06,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:47:06,279 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7001fc39e766418166b5245dd523731096962c63b3f1d8b8399a7fc1e7a88c5f [2021-12-14 17:47:06,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:47:06,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:47:06,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:47:06,504 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:47:06,505 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:47:06,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i [2021-12-14 17:47:06,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b51753a6b/d88fbdb4d98a448e8b55b1e73bf6b00e/FLAG6c1f15b21 [2021-12-14 17:47:07,195 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:47:07,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i [2021-12-14 17:47:07,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b51753a6b/d88fbdb4d98a448e8b55b1e73bf6b00e/FLAG6c1f15b21 [2021-12-14 17:47:07,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b51753a6b/d88fbdb4d98a448e8b55b1e73bf6b00e [2021-12-14 17:47:07,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:47:07,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:47:07,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:47:07,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:47:07,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:47:07,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:47:07" (1/1) ... [2021-12-14 17:47:07,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49da4f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:07, skipping insertion in model container [2021-12-14 17:47:07,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:47:07" (1/1) ... [2021-12-14 17:47:07,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:47:07,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:47:08,139 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6037] [2021-12-14 17:47:08,139 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6038-6039] [2021-12-14 17:47:08,551 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/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i[185861,185874] [2021-12-14 17:47:09,229 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-14 17:47:09,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:47:09,261 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:47:09,340 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6037] [2021-12-14 17:47:09,341 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6038-6039] [2021-12-14 17:47:09,350 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/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i[185861,185874] [2021-12-14 17:47:09,563 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-14 17:47:09,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:47:09,620 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:47:09,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:09 WrapperNode [2021-12-14 17:47:09,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:47:09,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:47:09,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:47:09,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:47:09,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:09" (1/1) ... [2021-12-14 17:47:09,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:09" (1/1) ... [2021-12-14 17:47:09,848 INFO L137 Inliner]: procedures = 259, calls = 2016, calls flagged for inlining = 128, calls inlined = 102, statements flattened = 4816 [2021-12-14 17:47:09,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:47:09,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:47:09,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:47:09,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:47:09,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:09" (1/1) ... [2021-12-14 17:47:09,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:09" (1/1) ... [2021-12-14 17:47:09,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:09" (1/1) ... [2021-12-14 17:47:09,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:09" (1/1) ... [2021-12-14 17:47:10,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:09" (1/1) ... [2021-12-14 17:47:10,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:09" (1/1) ... [2021-12-14 17:47:10,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:09" (1/1) ... [2021-12-14 17:47:10,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:47:10,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:47:10,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:47:10,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:47:10,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:09" (1/1) ... [2021-12-14 17:47:10,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:47:10,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:47:10,120 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) [2021-12-14 17:47:10,127 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 [2021-12-14 17:47:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure he_remove_one [2021-12-14 17:47:10,149 INFO L138 BoogieDeclarations]: Found implementation of procedure he_remove_one [2021-12-14 17:47:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-14 17:47:10,149 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-14 17:47:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2021-12-14 17:47:10,150 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2021-12-14 17:47:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-14 17:47:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:47:10,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:47:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure he_close [2021-12-14 17:47:10,150 INFO L138 BoogieDeclarations]: Found implementation of procedure he_close [2021-12-14 17:47:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2021-12-14 17:47:10,150 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2021-12-14 17:47:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-14 17:47:10,151 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-14 17:47:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-14 17:47:10,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-14 17:47:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:47:10,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:47:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure he_phy_get [2021-12-14 17:47:10,151 INFO L138 BoogieDeclarations]: Found implementation of procedure he_phy_get [2021-12-14 17:47:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-12-14 17:47:10,151 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-12-14 17:47:10,152 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2021-12-14 17:47:10,152 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2021-12-14 17:47:10,152 INFO L130 BoogieDeclarations]: Found specification of procedure __alloc_tpd [2021-12-14 17:47:10,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __alloc_tpd [2021-12-14 17:47:10,152 INFO L130 BoogieDeclarations]: Found specification of procedure rate_to_atmf [2021-12-14 17:47:10,152 INFO L138 BoogieDeclarations]: Found implementation of procedure rate_to_atmf [2021-12-14 17:47:10,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:47:10,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:47:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-14 17:47:10,153 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-14 17:47:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-14 17:47:10,153 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-14 17:47:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure he_phy_put [2021-12-14 17:47:10,153 INFO L138 BoogieDeclarations]: Found implementation of procedure he_phy_put [2021-12-14 17:47:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:47:10,154 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:47:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:47:10,154 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:47:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-12-14 17:47:10,154 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-12-14 17:47:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:47:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-14 17:47:10,155 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-14 17:47:10,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:47:10,155 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2021-12-14 17:47:10,155 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2021-12-14 17:47:10,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-14 17:47:10,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-14 17:47:10,156 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:47:10,156 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:47:10,157 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2021-12-14 17:47:10,157 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2021-12-14 17:47:10,157 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-14 17:47:10,157 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-14 17:47:10,157 INFO L130 BoogieDeclarations]: Found specification of procedure he_readl_internal [2021-12-14 17:47:10,157 INFO L138 BoogieDeclarations]: Found implementation of procedure he_readl_internal [2021-12-14 17:47:10,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:47:10,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:47:10,158 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-14 17:47:10,158 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-14 17:47:10,158 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-12-14 17:47:10,158 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-12-14 17:47:10,159 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-12-14 17:47:10,159 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-12-14 17:47:10,159 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:47:10,159 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:47:10,159 INFO L130 BoogieDeclarations]: Found specification of procedure he_send [2021-12-14 17:47:10,159 INFO L138 BoogieDeclarations]: Found implementation of procedure he_send [2021-12-14 17:47:10,159 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2021-12-14 17:47:10,159 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2021-12-14 17:47:10,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-14 17:47:10,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-14 17:47:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-14 17:47:10,160 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-14 17:47:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-12-14 17:47:10,160 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-12-14 17:47:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-14 17:47:10,160 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-14 17:47:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure he_writel_internal [2021-12-14 17:47:10,160 INFO L138 BoogieDeclarations]: Found implementation of procedure he_writel_internal [2021-12-14 17:47:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure he_ioctl [2021-12-14 17:47:10,161 INFO L138 BoogieDeclarations]: Found implementation of procedure he_ioctl [2021-12-14 17:47:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:47:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure he_open [2021-12-14 17:47:10,161 INFO L138 BoogieDeclarations]: Found implementation of procedure he_open [2021-12-14 17:47:10,162 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-14 17:47:10,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-14 17:47:10,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-14 17:47:10,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-14 17:47:10,162 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:47:10,163 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:47:10,163 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-14 17:47:10,163 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-14 17:47:10,163 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-14 17:47:10,163 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-14 17:47:10,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:47:10,163 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-14 17:47:10,163 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-14 17:47:10,163 INFO L130 BoogieDeclarations]: Found specification of procedure he_stop [2021-12-14 17:47:10,164 INFO L138 BoogieDeclarations]: Found implementation of procedure he_stop [2021-12-14 17:47:10,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:47:10,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:47:10,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:47:10,164 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-14 17:47:10,164 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-14 17:47:10,164 INFO L130 BoogieDeclarations]: Found specification of procedure __enqueue_tpd [2021-12-14 17:47:10,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __enqueue_tpd [2021-12-14 17:47:10,165 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-14 17:47:10,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-14 17:47:10,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:47:10,167 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-14 17:47:10,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-14 17:47:10,168 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-14 17:47:10,168 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-14 17:47:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-14 17:47:10,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-14 17:47:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:47:10,170 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-12-14 17:47:10,170 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-12-14 17:47:10,172 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 17:47:10,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-14 17:47:10,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-14 17:47:10,173 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-12-14 17:47:10,173 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-12-14 17:47:10,173 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-14 17:47:10,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-14 17:47:10,173 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-14 17:47:10,173 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-14 17:47:10,173 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_deregister [2021-12-14 17:47:10,173 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_deregister [2021-12-14 17:47:10,174 INFO L130 BoogieDeclarations]: Found specification of procedure read_prom_byte [2021-12-14 17:47:10,174 INFO L138 BoogieDeclarations]: Found implementation of procedure read_prom_byte [2021-12-14 17:47:10,174 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-12-14 17:47:10,174 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-12-14 17:47:10,174 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-14 17:47:10,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-14 17:47:10,174 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-12-14 17:47:10,174 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-12-14 17:47:10,174 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-14 17:47:10,174 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-14 17:47:10,175 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-12-14 17:47:10,175 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-12-14 17:47:10,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:47:10,175 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-14 17:47:10,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-14 17:47:10,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:47:10,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:47:10,175 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2021-12-14 17:47:10,175 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2021-12-14 17:47:10,803 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:47:10,805 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:47:11,036 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:47:13,104 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:47:13,117 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:47:13,117 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:47:13,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:47:13 BoogieIcfgContainer [2021-12-14 17:47:13,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:47:13,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:47:13,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:47:13,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:47:13,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:47:07" (1/3) ... [2021-12-14 17:47:13,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4145ceec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:47:13, skipping insertion in model container [2021-12-14 17:47:13,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:09" (2/3) ... [2021-12-14 17:47:13,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4145ceec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:47:13, skipping insertion in model container [2021-12-14 17:47:13,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:47:13" (3/3) ... [2021-12-14 17:47:13,125 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i [2021-12-14 17:47:13,129 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:47:13,129 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:47:13,162 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:47:13,166 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:47:13,167 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:47:13,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 1686 states, 1106 states have (on average 1.298372513562387) internal successors, (1436), 1129 states have internal predecessors, (1436), 510 states have call successors, (510), 69 states have call predecessors, (510), 68 states have return successors, (504), 499 states have call predecessors, (504), 504 states have call successors, (504) [2021-12-14 17:47:13,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-14 17:47:13,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:47:13,207 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:47:13,207 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:47:13,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:47:13,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1467579896, now seen corresponding path program 1 times [2021-12-14 17:47:13,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:47:13,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258812623] [2021-12-14 17:47:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:47:13,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:47:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:13,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:47:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:13,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:47:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:13,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:47:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:13,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:47:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:13,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:47:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:13,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:47:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 17:47:13,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:47:13,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258812623] [2021-12-14 17:47:13,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258812623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:47:13,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:47:13,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:47:13,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519673919] [2021-12-14 17:47:13,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:47:13,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:47:13,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:47:13,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:47:13,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:47:13,617 INFO L87 Difference]: Start difference. First operand has 1686 states, 1106 states have (on average 1.298372513562387) internal successors, (1436), 1129 states have internal predecessors, (1436), 510 states have call successors, (510), 69 states have call predecessors, (510), 68 states have return successors, (504), 499 states have call predecessors, (504), 504 states have call successors, (504) Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:47:19,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:47:19,321 INFO L93 Difference]: Finished difference Result 4826 states and 7102 transitions. [2021-12-14 17:47:19,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:47:19,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2021-12-14 17:47:19,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:47:19,346 INFO L225 Difference]: With dead ends: 4826 [2021-12-14 17:47:19,346 INFO L226 Difference]: Without dead ends: 3112 [2021-12-14 17:47:19,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:47:19,358 INFO L933 BasicCegarLoop]: 3506 mSDtfsCounter, 2611 mSDsluCounter, 4774 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 1739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3005 SdHoareTripleChecker+Valid, 8280 SdHoareTripleChecker+Invalid, 4386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1739 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:47:19,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3005 Valid, 8280 Invalid, 4386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1739 Valid, 2647 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-12-14 17:47:19,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3112 states. [2021-12-14 17:47:19,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3112 to 2863. [2021-12-14 17:47:19,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 1872 states have (on average 1.2788461538461537) internal successors, (2394), 1894 states have internal predecessors, (2394), 877 states have call successors, (877), 115 states have call predecessors, (877), 113 states have return successors, (876), 866 states have call predecessors, (876), 876 states have call successors, (876) [2021-12-14 17:47:19,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 4147 transitions. [2021-12-14 17:47:19,553 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 4147 transitions. Word has length 61 [2021-12-14 17:47:19,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:47:19,553 INFO L470 AbstractCegarLoop]: Abstraction has 2863 states and 4147 transitions. [2021-12-14 17:47:19,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:47:19,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 4147 transitions. [2021-12-14 17:47:19,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-14 17:47:19,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:47:19,557 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:47:19,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:47:19,557 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:47:19,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:47:19,558 INFO L85 PathProgramCache]: Analyzing trace with hash 528262647, now seen corresponding path program 1 times [2021-12-14 17:47:19,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:47:19,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746769745] [2021-12-14 17:47:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:47:19,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:47:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:19,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:47:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:19,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:47:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:19,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:47:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:47:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:19,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:47:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:19,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:47:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 17:47:19,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:47:19,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746769745] [2021-12-14 17:47:19,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746769745] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:47:19,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:47:19,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:47:19,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343310556] [2021-12-14 17:47:19,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:47:19,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:47:19,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:47:19,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:47:19,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:47:19,698 INFO L87 Difference]: Start difference. First operand 2863 states and 4147 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:47:22,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:47:22,628 INFO L93 Difference]: Finished difference Result 6615 states and 9571 transitions. [2021-12-14 17:47:22,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:47:22,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 69 [2021-12-14 17:47:22,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:47:22,647 INFO L225 Difference]: With dead ends: 6615 [2021-12-14 17:47:22,647 INFO L226 Difference]: Without dead ends: 3765 [2021-12-14 17:47:22,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:47:22,660 INFO L933 BasicCegarLoop]: 3021 mSDtfsCounter, 1233 mSDsluCounter, 3212 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 6233 SdHoareTripleChecker+Invalid, 2065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:47:22,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1441 Valid, 6233 Invalid, 2065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-14 17:47:22,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2021-12-14 17:47:22,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3694. [2021-12-14 17:47:22,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3694 states, 2441 states have (on average 1.2908643998361327) internal successors, (3151), 2476 states have internal predecessors, (3151), 1083 states have call successors, (1083), 171 states have call predecessors, (1083), 169 states have return successors, (1082), 1068 states have call predecessors, (1082), 1082 states have call successors, (1082) [2021-12-14 17:47:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3694 states to 3694 states and 5316 transitions. [2021-12-14 17:47:22,826 INFO L78 Accepts]: Start accepts. Automaton has 3694 states and 5316 transitions. Word has length 69 [2021-12-14 17:47:22,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:47:22,826 INFO L470 AbstractCegarLoop]: Abstraction has 3694 states and 5316 transitions. [2021-12-14 17:47:22,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:47:22,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3694 states and 5316 transitions. [2021-12-14 17:47:22,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-14 17:47:22,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:47:22,860 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-14 17:47:22,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:47:22,860 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:47:22,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:47:22,861 INFO L85 PathProgramCache]: Analyzing trace with hash 441630700, now seen corresponding path program 1 times [2021-12-14 17:47:22,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:47:22,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096156491] [2021-12-14 17:47:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:47:22,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:47:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:23,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:47:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:23,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:47:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:47:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:23,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:47:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:23,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:47:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:23,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:47:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:23,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:47:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-14 17:47:23,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:47:23,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096156491] [2021-12-14 17:47:23,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096156491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:47:23,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:47:23,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:47:23,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812944239] [2021-12-14 17:47:23,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:47:23,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:47:23,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:47:23,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:47:23,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:47:23,066 INFO L87 Difference]: Start difference. First operand 3694 states and 5316 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-14 17:47:26,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:47:26,066 INFO L93 Difference]: Finished difference Result 8748 states and 12550 transitions. [2021-12-14 17:47:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:47:26,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 87 [2021-12-14 17:47:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:47:26,089 INFO L225 Difference]: With dead ends: 8748 [2021-12-14 17:47:26,090 INFO L226 Difference]: Without dead ends: 5078 [2021-12-14 17:47:26,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:47:26,105 INFO L933 BasicCegarLoop]: 3357 mSDtfsCounter, 2211 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2657 SdHoareTripleChecker+Valid, 5668 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:47:26,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2657 Valid, 5668 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-14 17:47:26,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5078 states. [2021-12-14 17:47:26,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5078 to 4980. [2021-12-14 17:47:26,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4980 states, 3325 states have (on average 1.2947368421052632) internal successors, (4305), 3377 states have internal predecessors, (4305), 1396 states have call successors, (1396), 260 states have call predecessors, (1396), 258 states have return successors, (1395), 1375 states have call predecessors, (1395), 1395 states have call successors, (1395) [2021-12-14 17:47:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4980 states to 4980 states and 7096 transitions. [2021-12-14 17:47:26,309 INFO L78 Accepts]: Start accepts. Automaton has 4980 states and 7096 transitions. Word has length 87 [2021-12-14 17:47:26,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:47:26,310 INFO L470 AbstractCegarLoop]: Abstraction has 4980 states and 7096 transitions. [2021-12-14 17:47:26,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-14 17:47:26,310 INFO L276 IsEmpty]: Start isEmpty. Operand 4980 states and 7096 transitions. [2021-12-14 17:47:26,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-14 17:47:26,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:47:26,313 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-14 17:47:26,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:47:26,313 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:47:26,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:47:26,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2087155472, now seen corresponding path program 1 times [2021-12-14 17:47:26,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:47:26,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453856911] [2021-12-14 17:47:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:47:26,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:47:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:26,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:47:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:26,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:47:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:26,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:47:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:26,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:47:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:26,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:47:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:26,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:47:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:26,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 17:47:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-14 17:47:26,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:47:26,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453856911] [2021-12-14 17:47:26,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453856911] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:47:26,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:47:26,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:47:26,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626838653] [2021-12-14 17:47:26,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:47:26,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:47:26,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:47:26,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:47:26,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:47:26,474 INFO L87 Difference]: Start difference. First operand 4980 states and 7096 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:47:28,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:47:28,665 INFO L93 Difference]: Finished difference Result 5349 states and 7545 transitions. [2021-12-14 17:47:28,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:47:28,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 82 [2021-12-14 17:47:28,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:47:28,698 INFO L225 Difference]: With dead ends: 5349 [2021-12-14 17:47:28,698 INFO L226 Difference]: Without dead ends: 5346 [2021-12-14 17:47:28,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:47:28,702 INFO L933 BasicCegarLoop]: 2333 mSDtfsCounter, 2297 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 1267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2632 SdHoareTripleChecker+Valid, 3738 SdHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1267 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:47:28,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2632 Valid, 3738 Invalid, 2092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1267 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 17:47:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5346 states. [2021-12-14 17:47:28,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5346 to 5242. [2021-12-14 17:47:28,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5242 states, 3506 states have (on average 1.2875071306332002) internal successors, (4514), 3558 states have internal predecessors, (4514), 1430 states have call successors, (1430), 307 states have call predecessors, (1430), 305 states have return successors, (1429), 1409 states have call predecessors, (1429), 1429 states have call successors, (1429) [2021-12-14 17:47:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5242 states to 5242 states and 7373 transitions. [2021-12-14 17:47:28,892 INFO L78 Accepts]: Start accepts. Automaton has 5242 states and 7373 transitions. Word has length 82 [2021-12-14 17:47:28,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:47:28,894 INFO L470 AbstractCegarLoop]: Abstraction has 5242 states and 7373 transitions. [2021-12-14 17:47:28,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:47:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 5242 states and 7373 transitions. [2021-12-14 17:47:28,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-14 17:47:28,902 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:47:28,902 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2021-12-14 17:47:28,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:47:28,902 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:47:28,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:47:28,903 INFO L85 PathProgramCache]: Analyzing trace with hash -659372430, now seen corresponding path program 1 times [2021-12-14 17:47:28,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:47:28,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743281948] [2021-12-14 17:47:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:47:28,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:47:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:29,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:47:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:29,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:47:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:29,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:47:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:29,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:47:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:29,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:47:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:29,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:47:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:29,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 17:47:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:29,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 17:47:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:29,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:47:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:29,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:47:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:29,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 17:47:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:29,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 17:47:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-12-14 17:47:29,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:47:29,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743281948] [2021-12-14 17:47:29,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743281948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:47:29,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:47:29,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:47:29,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094905164] [2021-12-14 17:47:29,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:47:29,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:47:29,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:47:29,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:47:29,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:47:29,093 INFO L87 Difference]: Start difference. First operand 5242 states and 7373 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 17:47:32,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:47:32,185 INFO L93 Difference]: Finished difference Result 10974 states and 15500 transitions. [2021-12-14 17:47:32,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:47:32,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 128 [2021-12-14 17:47:32,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:47:32,213 INFO L225 Difference]: With dead ends: 10974 [2021-12-14 17:47:32,213 INFO L226 Difference]: Without dead ends: 5756 [2021-12-14 17:47:32,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:47:32,233 INFO L933 BasicCegarLoop]: 2294 mSDtfsCounter, 1164 mSDsluCounter, 5056 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 1775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 7350 SdHoareTripleChecker+Invalid, 3906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1775 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:47:32,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1221 Valid, 7350 Invalid, 3906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1775 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-14 17:47:32,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5756 states. [2021-12-14 17:47:32,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5756 to 5245. [2021-12-14 17:47:32,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 3509 states have (on average 1.287261328013679) internal successors, (4517), 3561 states have internal predecessors, (4517), 1430 states have call successors, (1430), 307 states have call predecessors, (1430), 305 states have return successors, (1429), 1409 states have call predecessors, (1429), 1429 states have call successors, (1429) [2021-12-14 17:47:32,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 7376 transitions. [2021-12-14 17:47:32,498 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 7376 transitions. Word has length 128 [2021-12-14 17:47:32,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:47:32,499 INFO L470 AbstractCegarLoop]: Abstraction has 5245 states and 7376 transitions. [2021-12-14 17:47:32,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 17:47:32,500 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 7376 transitions. [2021-12-14 17:47:32,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-14 17:47:32,506 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:47:32,506 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2021-12-14 17:47:32,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:47:32,507 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:47:32,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:47:32,507 INFO L85 PathProgramCache]: Analyzing trace with hash -229870152, now seen corresponding path program 1 times [2021-12-14 17:47:32,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:47:32,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058119051] [2021-12-14 17:47:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:47:32,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:47:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:32,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:47:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:32,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:47:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:32,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:47:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:32,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:47:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:47:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:32,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:47:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:32,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 17:47:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:32,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 17:47:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:32,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:47:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:32,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:47:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:32,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 17:47:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:32,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:47:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-14 17:47:32,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:47:32,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058119051] [2021-12-14 17:47:32,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058119051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:47:32,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:47:32,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 17:47:32,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122596621] [2021-12-14 17:47:32,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:47:32,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:47:32,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:47:32,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:47:32,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:47:32,716 INFO L87 Difference]: Start difference. First operand 5245 states and 7376 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-14 17:47:38,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:47:38,501 INFO L93 Difference]: Finished difference Result 14185 states and 20118 transitions. [2021-12-14 17:47:38,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 17:47:38,501 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 130 [2021-12-14 17:47:38,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:47:38,541 INFO L225 Difference]: With dead ends: 14185 [2021-12-14 17:47:38,541 INFO L226 Difference]: Without dead ends: 8964 [2021-12-14 17:47:38,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-12-14 17:47:38,562 INFO L933 BasicCegarLoop]: 4093 mSDtfsCounter, 4211 mSDsluCounter, 12646 mSDsCounter, 0 mSdLazyCounter, 4416 mSolverCounterSat, 3456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4656 SdHoareTripleChecker+Valid, 16739 SdHoareTripleChecker+Invalid, 7872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3456 IncrementalHoareTripleChecker+Valid, 4416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:47:38,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4656 Valid, 16739 Invalid, 7872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3456 Valid, 4416 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-12-14 17:47:38,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8964 states. [2021-12-14 17:47:38,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8964 to 5260. [2021-12-14 17:47:38,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 3519 states have (on average 1.2870133560670645) internal successors, (4529), 3571 states have internal predecessors, (4529), 1435 states have call successors, (1435), 307 states have call predecessors, (1435), 305 states have return successors, (1434), 1414 states have call predecessors, (1434), 1434 states have call successors, (1434) [2021-12-14 17:47:38,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 7398 transitions. [2021-12-14 17:47:38,934 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 7398 transitions. Word has length 130 [2021-12-14 17:47:38,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:47:38,934 INFO L470 AbstractCegarLoop]: Abstraction has 5260 states and 7398 transitions. [2021-12-14 17:47:38,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-14 17:47:38,934 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 7398 transitions. [2021-12-14 17:47:38,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-14 17:47:38,938 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:47:38,939 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2021-12-14 17:47:38,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:47:38,939 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:47:38,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:47:38,939 INFO L85 PathProgramCache]: Analyzing trace with hash 471729722, now seen corresponding path program 1 times [2021-12-14 17:47:38,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:47:38,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478028036] [2021-12-14 17:47:38,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:47:38,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:47:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:39,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:47:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:39,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:47:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:39,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:47:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:39,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:47:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:39,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:47:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:39,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:47:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:39,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 17:47:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:39,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 17:47:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:39,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:47:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:39,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:47:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:39,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 17:47:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:39,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:47:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:39,182 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-14 17:47:39,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:47:39,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478028036] [2021-12-14 17:47:39,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478028036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:47:39,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:47:39,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 17:47:39,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759736807] [2021-12-14 17:47:39,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:47:39,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 17:47:39,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:47:39,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 17:47:39,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:47:39,185 INFO L87 Difference]: Start difference. First operand 5260 states and 7398 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 17:47:45,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:47:45,910 INFO L93 Difference]: Finished difference Result 12779 states and 18381 transitions. [2021-12-14 17:47:45,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 17:47:45,910 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 130 [2021-12-14 17:47:45,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:47:45,938 INFO L225 Difference]: With dead ends: 12779 [2021-12-14 17:47:45,938 INFO L226 Difference]: Without dead ends: 7543 [2021-12-14 17:47:45,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:47:45,955 INFO L933 BasicCegarLoop]: 2750 mSDtfsCounter, 2169 mSDsluCounter, 13518 mSDsCounter, 0 mSdLazyCounter, 5258 mSolverCounterSat, 2276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 16268 SdHoareTripleChecker+Invalid, 7534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2276 IncrementalHoareTripleChecker+Valid, 5258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:47:45,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2226 Valid, 16268 Invalid, 7534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2276 Valid, 5258 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-12-14 17:47:45,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7543 states. [2021-12-14 17:47:46,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7543 to 5270. [2021-12-14 17:47:46,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 3527 states have (on average 1.286362347604196) internal successors, (4537), 3579 states have internal predecessors, (4537), 1435 states have call successors, (1435), 307 states have call predecessors, (1435), 307 states have return successors, (1444), 1416 states have call predecessors, (1444), 1434 states have call successors, (1444) [2021-12-14 17:47:46,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 7416 transitions. [2021-12-14 17:47:46,242 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 7416 transitions. Word has length 130 [2021-12-14 17:47:46,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:47:46,242 INFO L470 AbstractCegarLoop]: Abstraction has 5270 states and 7416 transitions. [2021-12-14 17:47:46,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 17:47:46,243 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 7416 transitions. [2021-12-14 17:47:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-14 17:47:46,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:47:46,250 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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, 1, 1, 1, 1] [2021-12-14 17:47:46,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:47:46,251 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:47:46,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:47:46,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2042997817, now seen corresponding path program 1 times [2021-12-14 17:47:46,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:47:46,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665217130] [2021-12-14 17:47:46,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:47:46,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:47:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:46,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:47:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:46,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:47:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:46,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:47:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:46,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:47:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:46,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:47:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:46,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:47:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:46,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 17:47:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:46,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:47:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:46,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:47:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:46,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 17:47:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:46,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:47:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:46,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 17:47:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:46,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:47:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-14 17:47:46,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:47:46,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665217130] [2021-12-14 17:47:46,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665217130] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:47:46,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:47:46,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:47:46,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231227842] [2021-12-14 17:47:46,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:47:46,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:47:46,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:47:46,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:47:46,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:47:46,429 INFO L87 Difference]: Start difference. First operand 5270 states and 7416 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-14 17:47:52,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:47:52,052 INFO L93 Difference]: Finished difference Result 13964 states and 19614 transitions. [2021-12-14 17:47:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:47:52,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 137 [2021-12-14 17:47:52,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:47:52,084 INFO L225 Difference]: With dead ends: 13964 [2021-12-14 17:47:52,084 INFO L226 Difference]: Without dead ends: 8718 [2021-12-14 17:47:52,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:47:52,102 INFO L933 BasicCegarLoop]: 3924 mSDtfsCounter, 3092 mSDsluCounter, 7092 mSDsCounter, 0 mSdLazyCounter, 3582 mSolverCounterSat, 2474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 11016 SdHoareTripleChecker+Invalid, 6056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2474 IncrementalHoareTripleChecker+Valid, 3582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:47:52,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3501 Valid, 11016 Invalid, 6056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2474 Valid, 3582 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-12-14 17:47:52,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8718 states. [2021-12-14 17:47:52,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8718 to 7954. [2021-12-14 17:47:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7954 states, 5348 states have (on average 1.275243081525804) internal successors, (6820), 5420 states have internal predecessors, (6820), 2120 states have call successors, (2120), 485 states have call predecessors, (2120), 485 states have return successors, (2134), 2095 states have call predecessors, (2134), 2119 states have call successors, (2134) [2021-12-14 17:47:52,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7954 states to 7954 states and 11074 transitions. [2021-12-14 17:47:52,478 INFO L78 Accepts]: Start accepts. Automaton has 7954 states and 11074 transitions. Word has length 137 [2021-12-14 17:47:52,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:47:52,478 INFO L470 AbstractCegarLoop]: Abstraction has 7954 states and 11074 transitions. [2021-12-14 17:47:52,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-14 17:47:52,478 INFO L276 IsEmpty]: Start isEmpty. Operand 7954 states and 11074 transitions. [2021-12-14 17:47:52,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-14 17:47:52,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:47:52,483 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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, 1, 1, 1] [2021-12-14 17:47:52,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 17:47:52,483 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:47:52,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:47:52,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1550258017, now seen corresponding path program 1 times [2021-12-14 17:47:52,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:47:52,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346921732] [2021-12-14 17:47:52,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:47:52,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:47:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:52,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:47:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:52,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:47:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:52,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:47:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:52,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:47:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:52,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:47:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:52,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:47:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:52,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 17:47:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:52,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:47:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:52,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:47:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:52,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 17:47:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:52,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:47:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:52,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 17:47:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:52,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 17:47:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-14 17:47:52,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:47:52,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346921732] [2021-12-14 17:47:52,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346921732] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:47:52,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:47:52,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-14 17:47:52,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142385790] [2021-12-14 17:47:52,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:47:52,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-14 17:47:52,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:47:52,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 17:47:52,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:47:52,836 INFO L87 Difference]: Start difference. First operand 7954 states and 11074 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-14 17:48:00,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:48:00,117 INFO L93 Difference]: Finished difference Result 18739 states and 26638 transitions. [2021-12-14 17:48:00,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 17:48:00,117 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 136 [2021-12-14 17:48:00,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:48:00,146 INFO L225 Difference]: With dead ends: 18739 [2021-12-14 17:48:00,146 INFO L226 Difference]: Without dead ends: 10809 [2021-12-14 17:48:00,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2021-12-14 17:48:00,161 INFO L933 BasicCegarLoop]: 2975 mSDtfsCounter, 5567 mSDsluCounter, 19269 mSDsCounter, 0 mSdLazyCounter, 5862 mSolverCounterSat, 5191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5623 SdHoareTripleChecker+Valid, 22244 SdHoareTripleChecker+Invalid, 11053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5191 IncrementalHoareTripleChecker+Valid, 5862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:48:00,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5623 Valid, 22244 Invalid, 11053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5191 Valid, 5862 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-12-14 17:48:00,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10809 states. [2021-12-14 17:48:00,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10809 to 8589. [2021-12-14 17:48:00,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8589 states, 5737 states have (on average 1.274359421300331) internal successors, (7311), 5811 states have internal predecessors, (7311), 2366 states have call successors, (2366), 485 states have call predecessors, (2366), 485 states have return successors, (2381), 2340 states have call predecessors, (2381), 2365 states have call successors, (2381) [2021-12-14 17:48:00,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8589 states to 8589 states and 12058 transitions. [2021-12-14 17:48:00,525 INFO L78 Accepts]: Start accepts. Automaton has 8589 states and 12058 transitions. Word has length 136 [2021-12-14 17:48:00,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:48:00,526 INFO L470 AbstractCegarLoop]: Abstraction has 8589 states and 12058 transitions. [2021-12-14 17:48:00,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-14 17:48:00,526 INFO L276 IsEmpty]: Start isEmpty. Operand 8589 states and 12058 transitions. [2021-12-14 17:48:00,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-14 17:48:00,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:48:00,532 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:48:00,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 17:48:00,532 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:48:00,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:48:00,532 INFO L85 PathProgramCache]: Analyzing trace with hash -423228594, now seen corresponding path program 1 times [2021-12-14 17:48:00,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:48:00,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506725214] [2021-12-14 17:48:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:48:00,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:48:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:00,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:48:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:00,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:48:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:00,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:48:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:48:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:00,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:48:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:00,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:48:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 17:48:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:48:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:00,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:48:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 17:48:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:00,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:48:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:00,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:48:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:00,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 17:48:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:48:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-14 17:48:00,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:48:00,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506725214] [2021-12-14 17:48:00,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506725214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:48:00,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:48:00,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:48:00,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821343278] [2021-12-14 17:48:00,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:48:00,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:48:00,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:48:00,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:48:00,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:48:00,766 INFO L87 Difference]: Start difference. First operand 8589 states and 12058 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 17:48:04,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:48:04,873 INFO L93 Difference]: Finished difference Result 18933 states and 26864 transitions. [2021-12-14 17:48:04,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:48:04,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 150 [2021-12-14 17:48:04,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:48:04,902 INFO L225 Difference]: With dead ends: 18933 [2021-12-14 17:48:04,902 INFO L226 Difference]: Without dead ends: 10368 [2021-12-14 17:48:04,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:48:04,922 INFO L933 BasicCegarLoop]: 2565 mSDtfsCounter, 1335 mSDsluCounter, 7728 mSDsCounter, 0 mSdLazyCounter, 2898 mSolverCounterSat, 1279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 10293 SdHoareTripleChecker+Invalid, 4177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1279 IncrementalHoareTripleChecker+Valid, 2898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:48:04,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1436 Valid, 10293 Invalid, 4177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1279 Valid, 2898 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-14 17:48:04,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states.