./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/bin/utaipan-G1rejxKTta --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4b03525ec5447375a01688a728ac5f10add5f84664db60bd75967c00682bdc6d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:40:57,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:40:57,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:40:57,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:40:57,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:40:57,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:40:57,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:40:57,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:40:57,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:40:57,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:40:57,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:40:57,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:40:57,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:40:57,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:40:57,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:40:57,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:40:57,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:40:57,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:40:57,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:40:57,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:40:57,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:40:57,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:40:57,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:40:57,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:40:57,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:40:57,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:40:57,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:40:57,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:40:57,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:40:57,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:40:57,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:40:57,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:40:57,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:40:57,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:40:57,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:40:57,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:40:57,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:40:57,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:40:57,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:40:57,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:40:57,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:40:57,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:40:57,674 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:40:57,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:40:57,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:40:57,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:40:57,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:40:57,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:40:57,678 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:40:57,678 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:40:57,678 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:40:57,679 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:40:57,679 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:40:57,680 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:40:57,680 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:40:57,680 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:40:57,681 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:40:57,684 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:40:57,684 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:40:57,685 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:40:57,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:40:57,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:40:57,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:40:57,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:40:57,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:40:57,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:40:57,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:40:57,688 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:40:57,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:40:57,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:40:57,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:40:57,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:57,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:40:57,691 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:40:57,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:40:57,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:40:57,691 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:40:57,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:40:57,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:40:57,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:40:57,694 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_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b03525ec5447375a01688a728ac5f10add5f84664db60bd75967c00682bdc6d [2022-10-17 17:40:57,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:40:58,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:40:58,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:40:58,025 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:40:58,026 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:40:58,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-10-17 17:40:58,125 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/bin/utaipan-G1rejxKTta/data/83d9e459f/2d691c18fe8d4910893cc3c766f636b8/FLAGe1709cd70 [2022-10-17 17:40:59,124 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:40:59,125 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-10-17 17:40:59,186 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/bin/utaipan-G1rejxKTta/data/83d9e459f/2d691c18fe8d4910893cc3c766f636b8/FLAGe1709cd70 [2022-10-17 17:40:59,204 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/bin/utaipan-G1rejxKTta/data/83d9e459f/2d691c18fe8d4910893cc3c766f636b8 [2022-10-17 17:40:59,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:40:59,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:40:59,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:59,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:40:59,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:40:59,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:59" (1/1) ... [2022-10-17 17:40:59,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a5b40d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:59, skipping insertion in model container [2022-10-17 17:40:59,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:59" (1/1) ... [2022-10-17 17:40:59,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:40:59,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:41:01,426 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_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i[212825,212838] [2022-10-17 17:41:01,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:41:01,613 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:41:02,024 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_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i[212825,212838] [2022-10-17 17:41:02,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:41:02,176 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:41:02,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:02 WrapperNode [2022-10-17 17:41:02,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:41:02,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:41:02,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:41:02,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:41:02,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:02" (1/1) ... [2022-10-17 17:41:02,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:02" (1/1) ... [2022-10-17 17:41:02,493 INFO L138 Inliner]: procedures = 272, calls = 2464, calls flagged for inlining = 116, calls inlined = 95, statements flattened = 3957 [2022-10-17 17:41:02,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:41:02,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:41:02,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:41:02,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:41:02,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:02" (1/1) ... [2022-10-17 17:41:02,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:02" (1/1) ... [2022-10-17 17:41:02,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:02" (1/1) ... [2022-10-17 17:41:02,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:02" (1/1) ... [2022-10-17 17:41:02,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:02" (1/1) ... [2022-10-17 17:41:02,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:02" (1/1) ... [2022-10-17 17:41:02,754 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:02" (1/1) ... [2022-10-17 17:41:02,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:02" (1/1) ... [2022-10-17 17:41:02,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:41:02,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:41:02,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:41:02,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:41:02,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:02" (1/1) ... [2022-10-17 17:41:02,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:41:02,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:02,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:41:02,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f090dcc-6b17-4ad4-92d6-24d1f52b3e07/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:41:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-10-17 17:41:02,921 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-10-17 17:41:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-10-17 17:41:02,921 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-10-17 17:41:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-10-17 17:41:02,922 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-10-17 17:41:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-10-17 17:41:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 17:41:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 17:41:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 17:41:02,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 17:41:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-17 17:41:02,923 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-17 17:41:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2022-10-17 17:41:02,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2022-10-17 17:41:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-10-17 17:41:02,924 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-10-17 17:41:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2022-10-17 17:41:02,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2022-10-17 17:41:02,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 17:41:02,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 17:41:02,925 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2022-10-17 17:41:02,925 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2022-10-17 17:41:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2022-10-17 17:41:02,926 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2022-10-17 17:41:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 17:41:02,926 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 17:41:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 17:41:02,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 17:41:02,927 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2022-10-17 17:41:02,928 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2022-10-17 17:41:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2022-10-17 17:41:02,928 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2022-10-17 17:41:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2022-10-17 17:41:02,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2022-10-17 17:41:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:41:02,929 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:41:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-10-17 17:41:02,930 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-10-17 17:41:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 17:41:02,930 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 17:41:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2022-10-17 17:41:02,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2022-10-17 17:41:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:41:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-10-17 17:41:02,931 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-10-17 17:41:02,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:41:02,933 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2022-10-17 17:41:02,933 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2022-10-17 17:41:02,934 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-10-17 17:41:02,934 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-10-17 17:41:02,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:41:02,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:41:02,935 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-17 17:41:02,935 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-17 17:41:02,935 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-17 17:41:02,935 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-17 17:41:02,936 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-10-17 17:41:02,936 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-10-17 17:41:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2022-10-17 17:41:02,939 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2022-10-17 17:41:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-10-17 17:41:02,939 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-10-17 17:41:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-10-17 17:41:02,939 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-10-17 17:41:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 17:41:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2022-10-17 17:41:02,940 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2022-10-17 17:41:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-10-17 17:41:02,940 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-10-17 17:41:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 17:41:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2022-10-17 17:41:02,942 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2022-10-17 17:41:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-10-17 17:41:02,942 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-10-17 17:41:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:41:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-10-17 17:41:02,943 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-10-17 17:41:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-10-17 17:41:02,944 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-10-17 17:41:02,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 17:41:02,945 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 17:41:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure lcd_write [2022-10-17 17:41:02,945 INFO L138 BoogieDeclarations]: Found implementation of procedure lcd_write [2022-10-17 17:41:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-17 17:41:02,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-17 17:41:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-10-17 17:41:02,947 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-10-17 17:41:02,947 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-10-17 17:41:02,947 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-10-17 17:41:02,948 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 17:41:02,948 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 17:41:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:41:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2022-10-17 17:41:02,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2022-10-17 17:41:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-10-17 17:41:02,950 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-10-17 17:41:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2022-10-17 17:41:02,950 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2022-10-17 17:41:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 17:41:02,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 17:41:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-10-17 17:41:02,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-10-17 17:41:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2022-10-17 17:41:02,952 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2022-10-17 17:41:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:41:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-10-17 17:41:02,953 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-10-17 17:41:02,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-10-17 17:41:02,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-10-17 17:41:02,955 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2022-10-17 17:41:02,958 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2022-10-17 17:41:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2022-10-17 17:41:02,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2022-10-17 17:41:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-10-17 17:41:02,961 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-10-17 17:41:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:41:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2022-10-17 17:41:02,962 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2022-10-17 17:41:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:41:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2022-10-17 17:41:02,969 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2022-10-17 17:41:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-10-17 17:41:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-10-17 17:41:02,969 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-10-17 17:41:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2022-10-17 17:41:02,970 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2022-10-17 17:41:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2022-10-17 17:41:02,970 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2022-10-17 17:41:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-10-17 17:41:02,971 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-10-17 17:41:02,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2022-10-17 17:41:02,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2022-10-17 17:41:02,971 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2022-10-17 17:41:02,971 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2022-10-17 17:41:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2022-10-17 17:41:02,972 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2022-10-17 17:41:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2022-10-17 17:41:02,972 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2022-10-17 17:41:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:41:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-10-17 17:41:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-10-17 17:41:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:41:03,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:41:03,937 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:41:03,941 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:41:04,497 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 17:41:12,788 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:41:13,949 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:41:13,949 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:41:13,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:41:13 BoogieIcfgContainer [2022-10-17 17:41:13,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:41:13,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:41:13,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:41:13,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:41:13,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:40:59" (1/3) ... [2022-10-17 17:41:13,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b0fa7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:41:13, skipping insertion in model container [2022-10-17 17:41:13,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:02" (2/3) ... [2022-10-17 17:41:13,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b0fa7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:41:13, skipping insertion in model container [2022-10-17 17:41:13,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:41:13" (3/3) ... [2022-10-17 17:41:13,967 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-10-17 17:41:13,991 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:41:13,992 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:41:14,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:41:14,123 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@334c501e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:41:14,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:41:14,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 878 states, 533 states have (on average 1.3358348968105065) internal successors, (712), 555 states have internal predecessors, (712), 281 states have call successors, (281), 63 states have call predecessors, (281), 62 states have return successors, (274), 273 states have call predecessors, (274), 274 states have call successors, (274) [2022-10-17 17:41:14,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-10-17 17:41:14,168 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:14,169 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:14,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:14,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:14,179 INFO L85 PathProgramCache]: Analyzing trace with hash -440122539, now seen corresponding path program 1 times [2022-10-17 17:41:14,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:14,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870041046] [2022-10-17 17:41:14,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:14,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2022-10-17 17:41:15,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:15,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870041046] [2022-10-17 17:41:15,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870041046] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:15,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:41:15,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:41:15,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523741721] [2022-10-17 17:41:15,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:15,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:41:15,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:15,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:41:15,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:41:15,352 INFO L87 Difference]: Start difference. First operand has 878 states, 533 states have (on average 1.3358348968105065) internal successors, (712), 555 states have internal predecessors, (712), 281 states have call successors, (281), 63 states have call predecessors, (281), 62 states have return successors, (274), 273 states have call predecessors, (274), 274 states have call successors, (274) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-10-17 17:41:17,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:41:20,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:41:23,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:23,654 INFO L93 Difference]: Finished difference Result 2489 states and 3683 transitions. [2022-10-17 17:41:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:41:23,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 167 [2022-10-17 17:41:23,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:23,712 INFO L225 Difference]: With dead ends: 2489 [2022-10-17 17:41:23,713 INFO L226 Difference]: Without dead ends: 1632 [2022-10-17 17:41:23,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:41:23,742 INFO L413 NwaCegarLoop]: 1380 mSDtfsCounter, 1095 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:23,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 2490 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 280 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2022-10-17 17:41:23,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2022-10-17 17:41:24,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1618. [2022-10-17 17:41:24,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 992 states have (on average 1.3175403225806452) internal successors, (1307), 1013 states have internal predecessors, (1307), 505 states have call successors, (505), 121 states have call predecessors, (505), 120 states have return successors, (498), 495 states have call predecessors, (498), 498 states have call successors, (498) [2022-10-17 17:41:24,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2310 transitions. [2022-10-17 17:41:24,048 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2310 transitions. Word has length 167 [2022-10-17 17:41:24,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:24,051 INFO L495 AbstractCegarLoop]: Abstraction has 1618 states and 2310 transitions. [2022-10-17 17:41:24,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-10-17 17:41:24,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2310 transitions. [2022-10-17 17:41:24,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-10-17 17:41:24,063 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:24,064 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:24,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:41:24,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:24,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:24,066 INFO L85 PathProgramCache]: Analyzing trace with hash 139748085, now seen corresponding path program 1 times [2022-10-17 17:41:24,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:24,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837017164] [2022-10-17 17:41:24,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:24,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2022-10-17 17:41:24,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:24,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837017164] [2022-10-17 17:41:24,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837017164] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:24,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:41:24,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:41:24,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442513037] [2022-10-17 17:41:24,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:24,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:41:24,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:24,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:41:24,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:41:24,996 INFO L87 Difference]: Start difference. First operand 1618 states and 2310 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-10-17 17:41:26,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:41:28,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []