./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.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=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa --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 0c3010ce5e1d1499df5a7edf91735fcbf8e6e49f56d21e0e77b6af352c375fd6 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:43:35,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:43:35,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:43:35,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:43:35,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:43:35,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:43:35,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:43:35,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:43:35,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:43:35,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:43:35,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:43:35,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:43:35,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:43:35,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:43:35,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:43:35,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:43:35,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:43:35,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:43:35,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:43:35,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:43:35,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:43:35,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:43:35,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:43:35,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:43:35,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:43:35,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:43:35,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:43:35,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:43:35,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:43:35,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:43:35,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:43:35,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:43:35,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:43:35,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:43:35,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:43:35,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:43:35,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:43:35,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:43:35,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:43:35,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:43:35,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:43:35,064 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 23:43:35,081 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:43:35,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:43:35,081 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:43:35,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:43:35,082 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:43:35,082 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:43:35,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:43:35,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:43:35,083 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:43:35,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:43:35,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:43:35,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:43:35,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:43:35,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:43:35,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:43:35,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:43:35,084 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:43:35,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:43:35,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:43:35,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:43:35,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:43:35,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:43:35,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:43:35,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:43:35,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:43:35,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:43:35,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:43:35,085 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:43:35,086 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:43:35,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:43:35,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:43:35,086 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c3010ce5e1d1499df5a7edf91735fcbf8e6e49f56d21e0e77b6af352c375fd6 [2021-12-06 23:43:35,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:43:35,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:43:35,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:43:35,283 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:43:35,283 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:43:35,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i [2021-12-06 23:43:35,327 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/data/584f649c8/0b1d3e7ebc8a4fed891d580ebb67736d/FLAG5ec8fbb5b [2021-12-06 23:43:35,905 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:43:35,905 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i [2021-12-06 23:43:35,930 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/data/584f649c8/0b1d3e7ebc8a4fed891d580ebb67736d/FLAG5ec8fbb5b [2021-12-06 23:43:36,358 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/data/584f649c8/0b1d3e7ebc8a4fed891d580ebb67736d [2021-12-06 23:43:36,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:43:36,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:43:36,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:43:36,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:43:36,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:43:36,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:43:36" (1/1) ... [2021-12-06 23:43:36,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@93ea8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:43:36, skipping insertion in model container [2021-12-06 23:43:36,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:43:36" (1/1) ... [2021-12-06 23:43:36,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:43:36,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:43:36,862 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4571] [2021-12-06 23:43:36,862 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4572-4573] [2021-12-06 23:43:37,203 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i[141860,141873] [2021-12-06 23:43:37,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:43:37,965 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:43:38,044 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4571] [2021-12-06 23:43:38,044 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4572-4573] [2021-12-06 23:43:38,054 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i[141860,141873] [2021-12-06 23:43:38,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:43:38,368 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:43:38,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:43:38 WrapperNode [2021-12-06 23:43:38,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:43:38,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:43:38,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:43:38,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:43:38,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:43:38" (1/1) ... [2021-12-06 23:43:38,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:43:38" (1/1) ... [2021-12-06 23:43:38,590 INFO L137 Inliner]: procedures = 250, calls = 2339, calls flagged for inlining = 129, calls inlined = 127, statements flattened = 6369 [2021-12-06 23:43:38,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:43:38,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:43:38,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:43:38,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:43:38,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:43:38" (1/1) ... [2021-12-06 23:43:38,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:43:38" (1/1) ... [2021-12-06 23:43:38,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:43:38" (1/1) ... [2021-12-06 23:43:38,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:43:38" (1/1) ... [2021-12-06 23:43:38,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:43:38" (1/1) ... [2021-12-06 23:43:38,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:43:38" (1/1) ... [2021-12-06 23:43:38,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:43:38" (1/1) ... [2021-12-06 23:43:38,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:43:38,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:43:38,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:43:38,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:43:38,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:43:38" (1/1) ... [2021-12-06 23:43:38,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:43:38,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:43:38,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:43:38,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:43:38,801 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_cmd_from_context [2021-12-06 23:43:38,801 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_cmd_from_context [2021-12-06 23:43:38,801 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-06 23:43:38,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 23:43:38,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 23:43:38,801 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-06 23:43:38,801 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-06 23:43:38,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 23:43:38,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 23:43:38,802 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_delete_hba [2021-12-06 23:43:38,802 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_delete_hba [2021-12-06 23:43:38,802 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2021-12-06 23:43:38,802 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2021-12-06 23:43:38,802 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2021-12-06 23:43:38,802 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2021-12-06 23:43:38,802 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-06 23:43:38,802 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-06 23:43:38,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-06 23:43:38,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-06 23:43:38,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 23:43:38,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 23:43:38,817 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_status_get [2021-12-06 23:43:38,817 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_status_get [2021-12-06 23:43:38,818 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_build_sys_table [2021-12-06 23:43:38,818 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_build_sys_table [2021-12-06 23:43:38,818 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2021-12-06 23:43:38,818 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2021-12-06 23:43:38,818 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_online_hba [2021-12-06 23:43:38,818 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_online_hba [2021-12-06 23:43:38,818 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_remove_host [2021-12-06 23:43:38,818 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_remove_host [2021-12-06 23:43:38,818 INFO L130 BoogieDeclarations]: Found specification of procedure __scsi_iterate_devices [2021-12-06 23:43:38,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __scsi_iterate_devices [2021-12-06 23:43:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-06 23:43:38,819 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-06 23:43:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 23:43:38,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 23:43:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_2 [2021-12-06 23:43:38,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_2 [2021-12-06 23:43:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2021-12-06 23:43:38,819 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2021-12-06 23:43:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 23:43:38,820 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 23:43:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_query_scalar [2021-12-06 23:43:38,820 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_query_scalar [2021-12-06 23:43:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure dma_high [2021-12-06 23:43:38,820 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_high [2021-12-06 23:43:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 23:43:38,820 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 23:43:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 23:43:38,820 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 23:43:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_hba_reset [2021-12-06 23:43:38,821 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_hba_reset [2021-12-06 23:43:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:43:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:43:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-06 23:43:38,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-06 23:43:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2021-12-06 23:43:38,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2021-12-06 23:43:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 23:43:38,821 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 23:43:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:43:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-06 23:43:38,821 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-06 23:43:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 23:43:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-06 23:43:38,822 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-06 23:43:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_lct_get [2021-12-06 23:43:38,822 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_lct_get [2021-12-06 23:43:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-06 23:43:38,822 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-06 23:43:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-06 23:43:38,822 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-06 23:43:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-06 23:43:38,822 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-06 23:43:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_reparse_lct [2021-12-06 23:43:38,823 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_reparse_lct [2021-12-06 23:43:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-06 23:43:38,823 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-06 23:43:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_post_wait [2021-12-06 23:43:38,823 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_post_wait [2021-12-06 23:43:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 23:43:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 23:43:38,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 23:43:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-06 23:43:38,823 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-06 23:43:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure dma_low [2021-12-06 23:43:38,823 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_low [2021-12-06 23:43:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-06 23:43:38,824 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-06 23:43:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-06 23:43:38,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-06 23:43:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_adjust_queue_depth [2021-12-06 23:43:38,824 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_adjust_queue_depth [2021-12-06 23:43:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 23:43:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_activate_hba [2021-12-06 23:43:38,824 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_activate_hba [2021-12-06 23:43:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-06 23:43:38,824 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-06 23:43:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:43:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_ioctl [2021-12-06 23:43:38,825 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_ioctl [2021-12-06 23:43:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_reset_hba [2021-12-06 23:43:38,825 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_reset_hba [2021-12-06 23:43:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 23:43:38,825 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 23:43:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_read_blink_led [2021-12-06 23:43:38,825 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_read_blink_led [2021-12-06 23:43:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-06 23:43:38,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-06 23:43:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-12-06 23:43:38,825 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-12-06 23:43:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 23:43:38,826 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 23:43:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:43:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-06 23:43:38,826 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-06 23:43:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_send_nop [2021-12-06 23:43:38,826 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_send_nop [2021-12-06 23:43:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-06 23:43:38,826 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-06 23:43:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 23:43:38,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 23:43:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:43:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_install_device [2021-12-06 23:43:38,826 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_install_device [2021-12-06 23:43:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure dpt_dma64 [2021-12-06 23:43:38,827 INFO L138 BoogieDeclarations]: Found implementation of procedure dpt_dma64 [2021-12-06 23:43:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-06 23:43:38,827 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-06 23:43:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:43:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_cmd_to_context [2021-12-06 23:43:38,827 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_cmd_to_context [2021-12-06 23:43:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:43:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-06 23:43:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-06 23:43:38,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-06 23:43:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 23:43:38,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 23:43:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-12-06 23:43:38,828 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-12-06 23:43:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-06 23:43:38,828 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-06 23:43:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_set_state [2021-12-06 23:43:38,828 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_set_state [2021-12-06 23:43:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2021-12-06 23:43:38,828 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2021-12-06 23:43:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_online [2021-12-06 23:43:38,828 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_online [2021-12-06 23:43:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_post_this [2021-12-06 23:43:38,828 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_post_this [2021-12-06 23:43:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-06 23:43:38,828 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-06 23:43:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-12-06 23:43:38,829 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-12-06 23:43:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_sys_shutdown [2021-12-06 23:43:38,829 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_sys_shutdown [2021-12-06 23:43:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-12-06 23:43:38,829 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-12-06 23:43:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-12-06 23:43:38,829 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-12-06 23:43:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:43:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_report_hba_unit [2021-12-06 23:43:38,829 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_report_hba_unit [2021-12-06 23:43:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-12-06 23:43:38,829 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-12-06 23:43:38,830 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2021-12-06 23:43:38,830 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2021-12-06 23:43:38,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:43:38,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:43:38,830 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-06 23:43:38,830 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-06 23:43:39,264 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:43:39,267 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:43:39,862 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 23:43:51,483 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:43:51,500 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:43:51,500 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 23:43:51,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:43:51 BoogieIcfgContainer [2021-12-06 23:43:51,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:43:51,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:43:51,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:43:51,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:43:51,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:43:36" (1/3) ... [2021-12-06 23:43:51,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f45c7fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:43:51, skipping insertion in model container [2021-12-06 23:43:51,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:43:38" (2/3) ... [2021-12-06 23:43:51,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f45c7fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:43:51, skipping insertion in model container [2021-12-06 23:43:51,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:43:51" (3/3) ... [2021-12-06 23:43:51,510 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i [2021-12-06 23:43:51,513 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:43:51,514 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:43:51,556 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:43:51,561 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 [2021-12-06 23:43:51,561 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:43:51,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 1998 states, 1483 states have (on average 1.3917734322319621) internal successors, (2064), 1507 states have internal predecessors, (2064), 437 states have call successors, (437), 77 states have call predecessors, (437), 76 states have return successors, (431), 430 states have call predecessors, (431), 431 states have call successors, (431) [2021-12-06 23:43:51,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 23:43:51,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:43:51,620 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:43:51,620 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:43:51,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:43:51,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1716966273, now seen corresponding path program 1 times [2021-12-06 23:43:51,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:43:51,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890967729] [2021-12-06 23:43:51,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:43:51,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:43:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:52,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:43:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:52,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:43:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:43:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:52,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 23:43:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:52,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 23:43:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 23:43:52,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:43:52,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890967729] [2021-12-06 23:43:52,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890967729] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:43:52,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:43:52,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:43:52,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994910231] [2021-12-06 23:43:52,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:43:52,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:43:52,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:43:52,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:43:52,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:43:52,121 INFO L87 Difference]: Start difference. First operand has 1998 states, 1483 states have (on average 1.3917734322319621) internal successors, (2064), 1507 states have internal predecessors, (2064), 437 states have call successors, (437), 77 states have call predecessors, (437), 76 states have return successors, (431), 430 states have call predecessors, (431), 431 states have call successors, (431) Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:43:55,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:00,437 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:08,265 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:11,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:44:11,906 INFO L93 Difference]: Finished difference Result 6659 states and 10182 transitions. [2021-12-06 23:44:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:44:11,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2021-12-06 23:44:11,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:44:11,950 INFO L225 Difference]: With dead ends: 6659 [2021-12-06 23:44:11,951 INFO L226 Difference]: Without dead ends: 4615 [2021-12-06 23:44:11,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:44:11,978 INFO L933 BasicCegarLoop]: 3234 mSDtfsCounter, 4788 mSDsluCounter, 5159 mSDsCounter, 0 mSdLazyCounter, 3860 mSolverCounterSat, 2770 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5146 SdHoareTripleChecker+Valid, 8393 SdHoareTripleChecker+Invalid, 6633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2770 IncrementalHoareTripleChecker+Valid, 3860 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:44:11,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5146 Valid, 8393 Invalid, 6633 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2770 Valid, 3860 Invalid, 3 Unknown, 0 Unchecked, 19.2s Time] [2021-12-06 23:44:11,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4615 states. [2021-12-06 23:44:12,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4615 to 3618. [2021-12-06 23:44:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 2687 states have (on average 1.384443617417194) internal successors, (3720), 2716 states have internal predecessors, (3720), 789 states have call successors, (789), 142 states have call predecessors, (789), 141 states have return successors, (788), 786 states have call predecessors, (788), 788 states have call successors, (788) [2021-12-06 23:44:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 5297 transitions. [2021-12-06 23:44:12,222 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 5297 transitions. Word has length 58 [2021-12-06 23:44:12,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:44:12,222 INFO L470 AbstractCegarLoop]: Abstraction has 3618 states and 5297 transitions. [2021-12-06 23:44:12,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:44:12,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 5297 transitions. [2021-12-06 23:44:12,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-06 23:44:12,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:44:12,229 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:44:12,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:44:12,230 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:44:12,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:44:12,230 INFO L85 PathProgramCache]: Analyzing trace with hash 543101132, now seen corresponding path program 1 times [2021-12-06 23:44:12,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:44:12,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323372599] [2021-12-06 23:44:12,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:44:12,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:44:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:12,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:44:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:12,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:44:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:12,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:44:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:12,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 23:44:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 23:44:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:12,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 23:44:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:12,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:44:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:12,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 23:44:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 23:44:12,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:44:12,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323372599] [2021-12-06 23:44:12,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323372599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:44:12,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:44:12,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:44:12,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608787671] [2021-12-06 23:44:12,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:44:12,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:44:12,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:44:12,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:44:12,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:44:12,643 INFO L87 Difference]: Start difference. First operand 3618 states and 5297 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 23:44:17,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:21,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:23,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:33,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:35,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:44:35,253 INFO L93 Difference]: Finished difference Result 9595 states and 14912 transitions. [2021-12-06 23:44:35,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:44:35,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2021-12-06 23:44:35,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:44:35,317 INFO L225 Difference]: With dead ends: 9595 [2021-12-06 23:44:35,317 INFO L226 Difference]: Without dead ends: 9592 [2021-12-06 23:44:35,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:44:35,323 INFO L933 BasicCegarLoop]: 3438 mSDtfsCounter, 5638 mSDsluCounter, 7196 mSDsCounter, 0 mSdLazyCounter, 5596 mSolverCounterSat, 3054 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6052 SdHoareTripleChecker+Valid, 10634 SdHoareTripleChecker+Invalid, 8654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3054 IncrementalHoareTripleChecker+Valid, 5596 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:44:35,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6052 Valid, 10634 Invalid, 8654 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3054 Valid, 5596 Invalid, 4 Unknown, 0 Unchecked, 22.1s Time] [2021-12-06 23:44:35,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9592 states. [2021-12-06 23:44:35,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9592 to 7428. [2021-12-06 23:44:35,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7428 states, 5506 states have (on average 1.3908463494369778) internal successors, (7658), 5570 states have internal predecessors, (7658), 1627 states have call successors, (1627), 271 states have call predecessors, (1627), 294 states have return successors, (1964), 1632 states have call predecessors, (1964), 1626 states have call successors, (1964) [2021-12-06 23:44:35,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7428 states to 7428 states and 11249 transitions. [2021-12-06 23:44:35,686 INFO L78 Accepts]: Start accepts. Automaton has 7428 states and 11249 transitions. Word has length 84 [2021-12-06 23:44:35,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:44:35,687 INFO L470 AbstractCegarLoop]: Abstraction has 7428 states and 11249 transitions. [2021-12-06 23:44:35,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 23:44:35,687 INFO L276 IsEmpty]: Start isEmpty. Operand 7428 states and 11249 transitions. [2021-12-06 23:44:35,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 23:44:35,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:44:35,697 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:44:35,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:44:35,697 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:44:35,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:44:35,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1033473605, now seen corresponding path program 1 times [2021-12-06 23:44:35,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:44:35,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005456172] [2021-12-06 23:44:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:44:35,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:44:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:35,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:44:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:35,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:44:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:35,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:44:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:35,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 23:44:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:35,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 23:44:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:35,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 23:44:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:35,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 23:44:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:35,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 23:44:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:35,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 23:44:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:35,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 23:44:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:35,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:44:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 23:44:35,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:44:35,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005456172] [2021-12-06 23:44:35,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005456172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:44:35,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:44:35,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:44:35,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141754062] [2021-12-06 23:44:35,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:44:35,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:44:35,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:44:35,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:44:35,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:44:35,938 INFO L87 Difference]: Start difference. First operand 7428 states and 11249 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 23:44:39,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:43,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:45,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:54,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:58,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:02,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:45:02,155 INFO L93 Difference]: Finished difference Result 27401 states and 42818 transitions. [2021-12-06 23:45:02,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 23:45:02,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2021-12-06 23:45:02,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:45:02,281 INFO L225 Difference]: With dead ends: 27401 [2021-12-06 23:45:02,282 INFO L226 Difference]: Without dead ends: 19984 [2021-12-06 23:45:02,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:45:02,346 INFO L933 BasicCegarLoop]: 3124 mSDtfsCounter, 7512 mSDsluCounter, 6514 mSDsCounter, 0 mSdLazyCounter, 5775 mSolverCounterSat, 5404 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7987 SdHoareTripleChecker+Valid, 9638 SdHoareTripleChecker+Invalid, 11184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5404 IncrementalHoareTripleChecker+Valid, 5775 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:45:02,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7987 Valid, 9638 Invalid, 11184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5404 Valid, 5775 Invalid, 5 Unknown, 0 Unchecked, 25.4s Time] [2021-12-06 23:45:02,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19984 states. [2021-12-06 23:45:02,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19984 to 15549. [2021-12-06 23:45:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15549 states, 11688 states have (on average 1.3963039014373717) internal successors, (16320), 11815 states have internal predecessors, (16320), 3282 states have call successors, (3282), 492 states have call predecessors, (3282), 578 states have return successors, (4014), 3327 states have call predecessors, (4014), 3281 states have call successors, (4014) [2021-12-06 23:45:03,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15549 states to 15549 states and 23616 transitions. [2021-12-06 23:45:03,121 INFO L78 Accepts]: Start accepts. Automaton has 15549 states and 23616 transitions. Word has length 103 [2021-12-06 23:45:03,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:45:03,122 INFO L470 AbstractCegarLoop]: Abstraction has 15549 states and 23616 transitions. [2021-12-06 23:45:03,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 23:45:03,122 INFO L276 IsEmpty]: Start isEmpty. Operand 15549 states and 23616 transitions. [2021-12-06 23:45:03,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-06 23:45:03,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:45:03,131 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:45:03,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:45:03,131 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:45:03,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:45:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash 123867907, now seen corresponding path program 1 times [2021-12-06 23:45:03,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:45:03,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925611141] [2021-12-06 23:45:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:45:03,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:45:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:03,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:45:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:03,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:45:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:03,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:45:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 23:45:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:03,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 23:45:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:03,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:45:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:45:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 23:45:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:03,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 23:45:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:03,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:45:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 23:45:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 23:45:03,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:45:03,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925611141] [2021-12-06 23:45:03,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925611141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:45:03,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:45:03,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 23:45:03,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433837010] [2021-12-06 23:45:03,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:45:03,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:45:03,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:45:03,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:45:03,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:45:03,458 INFO L87 Difference]: Start difference. First operand 15549 states and 23616 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 23:45:09,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:16,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:18,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:21,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:25,453 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:35,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:37,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:39,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:41,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:43,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:46,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:48,344 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:50,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:55,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:45:55,784 INFO L93 Difference]: Finished difference Result 58421 states and 92885 transitions. [2021-12-06 23:45:55,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 23:45:55,786 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 114 [2021-12-06 23:45:55,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:45:56,066 INFO L225 Difference]: With dead ends: 58421 [2021-12-06 23:45:56,066 INFO L226 Difference]: Without dead ends: 42892 [2021-12-06 23:45:56,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 23:45:56,142 INFO L933 BasicCegarLoop]: 3338 mSDtfsCounter, 10325 mSDsluCounter, 14751 mSDsCounter, 0 mSdLazyCounter, 13074 mSolverCounterSat, 4282 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10783 SdHoareTripleChecker+Valid, 18089 SdHoareTripleChecker+Invalid, 17367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4282 IncrementalHoareTripleChecker+Valid, 13074 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:45:56,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10783 Valid, 18089 Invalid, 17367 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4282 Valid, 13074 Invalid, 11 Unknown, 0 Unchecked, 50.3s Time] [2021-12-06 23:45:56,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42892 states. [2021-12-06 23:45:57,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42892 to 30960. [2021-12-06 23:45:57,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30960 states, 23257 states have (on average 1.3955798254289031) internal successors, (32457), 23559 states have internal predecessors, (32457), 6536 states have call successors, (6536), 977 states have call predecessors, (6536), 1166 states have return successors, (8364), 6595 states have call predecessors, (8364), 6535 states have call successors, (8364) [2021-12-06 23:45:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30960 states to 30960 states and 47357 transitions. [2021-12-06 23:45:57,692 INFO L78 Accepts]: Start accepts. Automaton has 30960 states and 47357 transitions. Word has length 114 [2021-12-06 23:45:57,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:45:57,692 INFO L470 AbstractCegarLoop]: Abstraction has 30960 states and 47357 transitions. [2021-12-06 23:45:57,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 23:45:57,693 INFO L276 IsEmpty]: Start isEmpty. Operand 30960 states and 47357 transitions. [2021-12-06 23:45:57,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-06 23:45:57,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:45:57,714 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:45:57,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 23:45:57,714 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:45:57,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:45:57,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1590762838, now seen corresponding path program 1 times [2021-12-06 23:45:57,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:45:57,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623347280] [2021-12-06 23:45:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:45:57,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:45:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:57,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:45:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:57,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:45:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:57,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:45:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:57,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 23:45:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:57,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 23:45:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:58,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:45:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:45:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:58,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 23:45:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:58,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 23:45:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:58,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:45:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:58,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 23:45:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 23:45:58,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:45:58,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623347280] [2021-12-06 23:45:58,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623347280] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:45:58,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:45:58,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 23:45:58,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71731190] [2021-12-06 23:45:58,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:45:58,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:45:58,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:45:58,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:45:58,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:45:58,075 INFO L87 Difference]: Start difference. First operand 30960 states and 47357 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 23:46:03,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:08,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:20,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:22,863 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:29,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:29,988 INFO L93 Difference]: Finished difference Result 116496 states and 186946 transitions. [2021-12-06 23:46:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 23:46:29,989 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 116 [2021-12-06 23:46:29,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:30,514 INFO L225 Difference]: With dead ends: 116496 [2021-12-06 23:46:30,514 INFO L226 Difference]: Without dead ends: 85556 [2021-12-06 23:46:30,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 23:46:30,724 INFO L933 BasicCegarLoop]: 3042 mSDtfsCounter, 13644 mSDsluCounter, 11757 mSDsCounter, 0 mSdLazyCounter, 8612 mSolverCounterSat, 10169 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14102 SdHoareTripleChecker+Valid, 14799 SdHoareTripleChecker+Invalid, 18784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10169 IncrementalHoareTripleChecker+Valid, 8612 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:30,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14102 Valid, 14799 Invalid, 18784 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10169 Valid, 8612 Invalid, 3 Unknown, 0 Unchecked, 28.4s Time] [2021-12-06 23:46:30,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85556 states. [2021-12-06 23:46:33,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85556 to 61838. [2021-12-06 23:46:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61838 states, 46451 states have (on average 1.3949107661837206) internal successors, (64795), 47071 states have internal predecessors, (64795), 13044 states have call successors, (13044), 1947 states have call predecessors, (13044), 2342 states have return successors, (17461), 13163 states have call predecessors, (17461), 13043 states have call successors, (17461) [2021-12-06 23:46:33,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61838 states to 61838 states and 95300 transitions. [2021-12-06 23:46:33,494 INFO L78 Accepts]: Start accepts. Automaton has 61838 states and 95300 transitions. Word has length 116 [2021-12-06 23:46:33,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:33,494 INFO L470 AbstractCegarLoop]: Abstraction has 61838 states and 95300 transitions. [2021-12-06 23:46:33,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 23:46:33,495 INFO L276 IsEmpty]: Start isEmpty. Operand 61838 states and 95300 transitions. [2021-12-06 23:46:33,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-06 23:46:33,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:33,507 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:33,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 23:46:33,507 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:33,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:33,508 INFO L85 PathProgramCache]: Analyzing trace with hash -144113110, now seen corresponding path program 1 times [2021-12-06 23:46:33,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:33,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124286000] [2021-12-06 23:46:33,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:33,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:33,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:46:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:33,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:46:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:33,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:46:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:33,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 23:46:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:33,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:46:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:33,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:46:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:33,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:46:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:33,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 23:46:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:33,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:46:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:33,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:46:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:33,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 23:46:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 23:46:33,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:33,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124286000] [2021-12-06 23:46:33,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124286000] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:33,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:33,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 23:46:33,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278815550] [2021-12-06 23:46:33,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:33,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:46:33,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:33,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:46:33,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:46:33,796 INFO L87 Difference]: Start difference. First operand 61838 states and 95300 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 23:46:38,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:44,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:50,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:52,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:54,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:00,543 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:06,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:10,881 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:13,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:15,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:21,453 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:29,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:47:29,064 INFO L93 Difference]: Finished difference Result 232830 states and 377267 transitions. [2021-12-06 23:47:29,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 23:47:29,064 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 115 [2021-12-06 23:47:29,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:47:29,958 INFO L225 Difference]: With dead ends: 232830 [2021-12-06 23:47:29,958 INFO L226 Difference]: Without dead ends: 171012 [2021-12-06 23:47:30,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 23:47:30,381 INFO L933 BasicCegarLoop]: 3036 mSDtfsCounter, 10552 mSDsluCounter, 13627 mSDsCounter, 0 mSdLazyCounter, 12565 mSolverCounterSat, 4372 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11012 SdHoareTripleChecker+Valid, 16663 SdHoareTripleChecker+Invalid, 16946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4372 IncrementalHoareTripleChecker+Valid, 12565 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:47:30,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11012 Valid, 16663 Invalid, 16946 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4372 Valid, 12565 Invalid, 9 Unknown, 0 Unchecked, 48.5s Time] [2021-12-06 23:47:30,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171012 states. [2021-12-06 23:47:35,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171012 to 123578. [2021-12-06 23:47:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123578 states, 92823 states have (on average 1.3942988267993923) internal successors, (129423), 94079 states have internal predecessors, (129423), 26060 states have call successors, (26060), 3887 states have call predecessors, (26060), 4694 states have return successors, (36551), 26299 states have call predecessors, (36551), 26059 states have call successors, (36551) [2021-12-06 23:47:36,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123578 states to 123578 states and 192034 transitions. [2021-12-06 23:47:36,333 INFO L78 Accepts]: Start accepts. Automaton has 123578 states and 192034 transitions. Word has length 115 [2021-12-06 23:47:36,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:47:36,334 INFO L470 AbstractCegarLoop]: Abstraction has 123578 states and 192034 transitions. [2021-12-06 23:47:36,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 23:47:36,334 INFO L276 IsEmpty]: Start isEmpty. Operand 123578 states and 192034 transitions. [2021-12-06 23:47:36,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-06 23:47:36,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:47:36,344 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:47:36,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 23:47:36,344 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:47:36,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:47:36,345 INFO L85 PathProgramCache]: Analyzing trace with hash -921436943, now seen corresponding path program 1 times [2021-12-06 23:47:36,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:47:36,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074221825] [2021-12-06 23:47:36,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:47:36,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:47:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:36,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:47:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:36,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:47:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:36,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:47:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:36,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 23:47:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:36,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 23:47:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:36,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:47:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:36,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:47:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:36,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 23:47:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:36,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 23:47:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:36,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:47:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:36,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 23:47:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:36,661 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 23:47:36,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:47:36,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074221825] [2021-12-06 23:47:36,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074221825] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:47:36,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:47:36,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 23:47:36,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816413146] [2021-12-06 23:47:36,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:47:36,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:47:36,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:47:36,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:47:36,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:47:36,663 INFO L87 Difference]: Start difference. First operand 123578 states and 192034 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 23:47:42,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:47,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:49,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:52,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:57,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:48:05,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:48:08,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:48:10,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:48:12,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:48:20,836 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:48:22,632 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:48:32,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:48:42,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:48:42,788 INFO L93 Difference]: Finished difference Result 465314 states and 762269 transitions. [2021-12-06 23:48:42,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 23:48:42,788 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 117 [2021-12-06 23:48:42,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:48:45,373 INFO L225 Difference]: With dead ends: 465314 [2021-12-06 23:48:45,373 INFO L226 Difference]: Without dead ends: 335766 [2021-12-06 23:48:46,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 23:48:46,313 INFO L933 BasicCegarLoop]: 3029 mSDtfsCounter, 10575 mSDsluCounter, 13611 mSDsCounter, 0 mSdLazyCounter, 12566 mSolverCounterSat, 4357 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11033 SdHoareTripleChecker+Valid, 16640 SdHoareTripleChecker+Invalid, 16934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4357 IncrementalHoareTripleChecker+Valid, 12566 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:48:46,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11033 Valid, 16640 Invalid, 16934 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4357 Valid, 12566 Invalid, 11 Unknown, 0 Unchecked, 51.3s Time] [2021-12-06 23:48:46,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335766 states. [2021-12-06 23:48:57,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335766 to 244292. [2021-12-06 23:48:57,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244292 states, 183299 states have (on average 1.3933463903240062) internal successors, (255399), 185783 states have internal predecessors, (255399), 51648 states have call successors, (51648), 7733 states have call predecessors, (51648), 9344 states have return successors, (76299), 52131 states have call predecessors, (76299), 51647 states have call successors, (76299) [2021-12-06 23:48:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244292 states to 244292 states and 383346 transitions. [2021-12-06 23:48:59,687 INFO L78 Accepts]: Start accepts. Automaton has 244292 states and 383346 transitions. Word has length 117 [2021-12-06 23:48:59,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:48:59,687 INFO L470 AbstractCegarLoop]: Abstraction has 244292 states and 383346 transitions. [2021-12-06 23:48:59,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 23:48:59,687 INFO L276 IsEmpty]: Start isEmpty. Operand 244292 states and 383346 transitions. [2021-12-06 23:48:59,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-06 23:48:59,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:48:59,698 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:48:59,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:48:59,698 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:48:59,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:48:59,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1464453862, now seen corresponding path program 1 times [2021-12-06 23:48:59,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:48:59,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848698579] [2021-12-06 23:48:59,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:48:59,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:48:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:59,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:48:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:59,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:48:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:59,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:48:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:59,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 23:48:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:59,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 23:48:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:59,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 23:48:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:59,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:48:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:59,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:48:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:00,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:49:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:00,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 23:49:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:00,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:49:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:00,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 23:49:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 23:49:00,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:49:00,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848698579] [2021-12-06 23:49:00,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848698579] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:49:00,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845202176] [2021-12-06 23:49:00,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:49:00,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:49:00,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:49:00,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:49:00,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:49:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:00,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 3942 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:49:00,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:49:01,150 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:49:01,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:49:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 23:49:01,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845202176] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:49:01,544 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:49:01,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 21 [2021-12-06 23:49:01,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213406364] [2021-12-06 23:49:01,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:49:01,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 23:49:01,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:49:01,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 23:49:01,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-12-06 23:49:01,545 INFO L87 Difference]: Start difference. First operand 244292 states and 383346 transitions. Second operand has 21 states, 21 states have (on average 7.428571428571429) internal successors, (156), 14 states have internal predecessors, (156), 7 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2021-12-06 23:49:11,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:21,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:23,786 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:27,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:34,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:47,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:49,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:51,946 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:00,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:02,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:06,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:08,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:12,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:16,281 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:21,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:29,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:59,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:50:59,296 INFO L93 Difference]: Finished difference Result 925910 states and 1571653 transitions. [2021-12-06 23:50:59,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-06 23:50:59,298 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.428571428571429) internal successors, (156), 14 states have internal predecessors, (156), 7 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) Word has length 126 [2021-12-06 23:50:59,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:51:05,745 INFO L225 Difference]: With dead ends: 925910 [2021-12-06 23:51:05,746 INFO L226 Difference]: Without dead ends: 675648 [2021-12-06 23:51:08,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 272 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2021-12-06 23:51:08,643 INFO L933 BasicCegarLoop]: 5275 mSDtfsCounter, 21709 mSDsluCounter, 54411 mSDsCounter, 0 mSdLazyCounter, 30401 mSolverCounterSat, 12780 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22575 SdHoareTripleChecker+Valid, 59686 SdHoareTripleChecker+Invalid, 43195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 12780 IncrementalHoareTripleChecker+Valid, 30401 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:51:08,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22575 Valid, 59686 Invalid, 43195 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [12780 Valid, 30401 Invalid, 14 Unknown, 0 Unchecked, 86.4s Time] [2021-12-06 23:51:09,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675648 states. [2021-12-06 23:51:29,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675648 to 364714. [2021-12-06 23:51:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364714 states, 273523 states have (on average 1.393151581402661) internal successors, (381059), 277267 states have internal predecessors, (381059), 77204 states have call successors, (77204), 11571 states have call predecessors, (77204), 13986 states have return successors, (112195), 77899 states have call predecessors, (112195), 77203 states have call successors, (112195) [2021-12-06 23:51:33,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364714 states to 364714 states and 570458 transitions. [2021-12-06 23:51:33,143 INFO L78 Accepts]: Start accepts. Automaton has 364714 states and 570458 transitions. Word has length 126 [2021-12-06 23:51:33,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:51:33,143 INFO L470 AbstractCegarLoop]: Abstraction has 364714 states and 570458 transitions. [2021-12-06 23:51:33,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.428571428571429) internal successors, (156), 14 states have internal predecessors, (156), 7 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2021-12-06 23:51:33,143 INFO L276 IsEmpty]: Start isEmpty. Operand 364714 states and 570458 transitions. [2021-12-06 23:51:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 23:51:33,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:51:33,160 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:51:33,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:51:33,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:33,362 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:51:33,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:33,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1414987699, now seen corresponding path program 1 times [2021-12-06 23:51:33,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:51:33,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043479215] [2021-12-06 23:51:33,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:33,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:51:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:33,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:51:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:33,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:51:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:33,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:51:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:33,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 23:51:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:33,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:51:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:33,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 23:51:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:33,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:51:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:33,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:51:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 23:51:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:33,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 23:51:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:33,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:51:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:33,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 23:51:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 23:51:33,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:51:33,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043479215] [2021-12-06 23:51:33,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043479215] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:51:33,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555251012] [2021-12-06 23:51:33,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:33,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:33,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:51:33,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:51:33,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bd34c00-5e5a-4c1d-80df-044ca2de4c24/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:51:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:34,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 3944 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:51:34,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:51:34,917 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:51:34,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:51:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 23:51:35,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555251012] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:51:35,400 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:51:35,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 22 [2021-12-06 23:51:35,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702347398] [2021-12-06 23:51:35,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:51:35,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 23:51:35,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:51:35,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 23:51:35,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-12-06 23:51:35,402 INFO L87 Difference]: Start difference. First operand 364714 states and 570458 transitions. Second operand has 22 states, 22 states have (on average 7.363636363636363) internal successors, (162), 15 states have internal predecessors, (162), 8 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2021-12-06 23:51:41,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:51:45,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:51:57,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:51:58,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:52:08,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:52:26,603 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:52:40,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:52:42,543 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:52:45,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:52:52,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:52:56,249 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:52:58,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:53:07,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:53:08,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:53:10,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:53:19,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:53:21,819 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:53:33,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:54:38,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:38,362 INFO L93 Difference]: Finished difference Result 1582260 states and 2673687 transitions. [2021-12-06 23:54:38,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-12-06 23:54:38,364 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.363636363636363) internal successors, (162), 15 states have internal predecessors, (162), 8 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 127 [2021-12-06 23:54:38,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted.