./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--pcnet32.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--pcnet32.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS --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 5c239738c5bcaa6d0932e9e226032e983634dc69e8293d25e6d6f15c626fb290 --- 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-8393723 [2022-11-19 07:15:18,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:15:18,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:15:18,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:15:18,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:15:18,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:15:18,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:15:18,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:15:18,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:15:18,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:15:18,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:15:18,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:15:18,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:15:18,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:15:18,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:15:18,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:15:18,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:15:18,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:15:18,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:15:18,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:15:18,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:15:18,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:15:18,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:15:18,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:15:18,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:15:18,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:15:18,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:15:18,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:15:18,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:15:18,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:15:18,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:15:18,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:15:18,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:15:18,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:15:18,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:15:18,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:15:18,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:15:18,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:15:18,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:15:18,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:15:18,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:15:18,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:15:18,256 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:15:18,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:15:18,257 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:15:18,257 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:15:18,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:15:18,258 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:15:18,258 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:15:18,259 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:15:18,259 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:15:18,259 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:15:18,259 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:15:18,259 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:15:18,260 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:15:18,260 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:15:18,260 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:15:18,260 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:15:18,261 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:15:18,261 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:15:18,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:15:18,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:15:18,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:15:18,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:15:18,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:15:18,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:15:18,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:15:18,263 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:15:18,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:15:18,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:15:18,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:15:18,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:15:18,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:15:18,265 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:15:18,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:15:18,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:15:18,266 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:15:18,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:15:18,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:15:18,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:15:18,266 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_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c239738c5bcaa6d0932e9e226032e983634dc69e8293d25e6d6f15c626fb290 [2022-11-19 07:15:18,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:15:18,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:15:18,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:15:18,617 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:15:18,618 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:15:18,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--pcnet32.ko-entry_point.cil.out.i [2022-11-19 07:15:18,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/data/0ad867fea/42028c4e3e264aeaa4a4e6edb159d663/FLAG9a915c9c4 [2022-11-19 07:15:19,696 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:15:19,697 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--pcnet32.ko-entry_point.cil.out.i [2022-11-19 07:15:19,748 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/data/0ad867fea/42028c4e3e264aeaa4a4e6edb159d663/FLAG9a915c9c4 [2022-11-19 07:15:20,117 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/data/0ad867fea/42028c4e3e264aeaa4a4e6edb159d663 [2022-11-19 07:15:20,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:15:20,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:15:20,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:15:20,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:15:20,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:15:20,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:15:20" (1/1) ... [2022-11-19 07:15:20,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43cafb9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:20, skipping insertion in model container [2022-11-19 07:15:20,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:15:20" (1/1) ... [2022-11-19 07:15:20,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:15:20,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:15:23,016 WARN L234 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_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--pcnet32.ko-entry_point.cil.out.i[329649,329662] [2022-11-19 07:15:23,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:15:23,174 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:15:23,655 WARN L234 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_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--pcnet32.ko-entry_point.cil.out.i[329649,329662] [2022-11-19 07:15:23,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:15:23,872 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:15:23,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:23 WrapperNode [2022-11-19 07:15:23,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:15:23,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:15:23,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:15:23,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:15:23,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:23" (1/1) ... [2022-11-19 07:15:24,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:23" (1/1) ... [2022-11-19 07:15:24,196 INFO L138 Inliner]: procedures = 328, calls = 2655, calls flagged for inlining = 162, calls inlined = 141, statements flattened = 6365 [2022-11-19 07:15:24,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:15:24,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:15:24,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:15:24,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:15:24,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:23" (1/1) ... [2022-11-19 07:15:24,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:23" (1/1) ... [2022-11-19 07:15:24,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:23" (1/1) ... [2022-11-19 07:15:24,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:23" (1/1) ... [2022-11-19 07:15:24,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:23" (1/1) ... [2022-11-19 07:15:24,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:23" (1/1) ... [2022-11-19 07:15:24,542 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:23" (1/1) ... [2022-11-19 07:15:24,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:23" (1/1) ... [2022-11-19 07:15:24,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:15:24,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:15:24,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:15:24,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:15:24,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:23" (1/1) ... [2022-11-19 07:15:24,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:15:24,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:15:24,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:15:24,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:15:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 07:15:24,698 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 07:15:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-19 07:15:24,699 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-19 07:15:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_3 [2022-11-19 07:15:24,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_3 [2022-11-19 07:15:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:15:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:15:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:15:24,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:15:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_rap [2022-11-19 07:15:24,700 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_rap [2022-11-19 07:15:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:15:24,701 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:15:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-19 07:15:24,701 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-19 07:15:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_pm_resume [2022-11-19 07:15:24,701 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_pm_resume [2022-11-19 07:15:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_check_media [2022-11-19 07:15:24,702 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_check_media [2022-11-19 07:15:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 07:15:24,702 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 07:15:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_ioctl [2022-11-19 07:15:24,702 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_ioctl [2022-11-19 07:15:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-19 07:15:24,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-19 07:15:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:15:24,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:15:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-19 07:15:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 07:15:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 07:15:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_poll_controller [2022-11-19 07:15:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_poll_controller [2022-11-19 07:15:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:15:24,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:15:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_free_ring [2022-11-19 07:15:24,706 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_free_ring [2022-11-19 07:15:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-19 07:15:24,706 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-19 07:15:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 07:15:24,706 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 07:15:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 07:15:24,707 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 07:15:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_interrupt [2022-11-19 07:15:24,707 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_interrupt [2022-11-19 07:15:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:15:24,708 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:15:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-19 07:15:24,709 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-19 07:15:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:15:24,710 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:15:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:15:24,710 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:15:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-19 07:15:24,711 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-19 07:15:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-19 07:15:24,711 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-19 07:15:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_gset [2022-11-19 07:15:24,711 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_gset [2022-11-19 07:15:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_purge_rx_ring [2022-11-19 07:15:24,712 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_purge_rx_ring [2022-11-19 07:15:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_csr [2022-11-19 07:15:24,713 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_csr [2022-11-19 07:15:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_tx_timeout [2022-11-19 07:15:24,713 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_tx_timeout [2022-11-19 07:15:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 07:15:24,713 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 07:15:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:15:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_netif_stop [2022-11-19 07:15:24,714 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_netif_stop [2022-11-19 07:15:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 07:15:24,715 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 07:15:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-19 07:15:24,715 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-19 07:15:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:15:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 07:15:24,716 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 07:15:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 07:15:24,716 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 07:15:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 07:15:24,716 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 07:15:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-19 07:15:24,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-19 07:15:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 07:15:24,718 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 07:15:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-19 07:15:24,718 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-19 07:15:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:15:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:15:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_read_csr [2022-11-19 07:15:24,720 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_read_csr [2022-11-19 07:15:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_set_multicast_list [2022-11-19 07:15:24,722 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_set_multicast_list [2022-11-19 07:15:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_bcr [2022-11-19 07:15:24,722 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_bcr [2022-11-19 07:15:24,723 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-19 07:15:24,723 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-19 07:15:24,723 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-19 07:15:24,723 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-19 07:15:24,723 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:15:24,723 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:15:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure mii_link_ok [2022-11-19 07:15:24,724 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_link_ok [2022-11-19 07:15:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:15:24,724 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:15:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_probe1 [2022-11-19 07:15:24,725 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_probe1 [2022-11-19 07:15:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 07:15:24,725 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 07:15:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_get_stats [2022-11-19 07:15:24,727 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_get_stats [2022-11-19 07:15:24,730 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-19 07:15:24,730 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-19 07:15:24,730 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_remove_one [2022-11-19 07:15:24,730 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_remove_one [2022-11-19 07:15:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:15:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_sset [2022-11-19 07:15:24,734 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_sset [2022-11-19 07:15:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 07:15:24,735 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 07:15:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~~u16~0~TO~VOID [2022-11-19 07:15:24,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~~u16~0~TO~VOID [2022-11-19 07:15:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_read_bcr [2022-11-19 07:15:24,741 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_read_bcr [2022-11-19 07:15:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:15:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_2 [2022-11-19 07:15:24,741 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_2 [2022-11-19 07:15:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-19 07:15:24,742 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-19 07:15:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_purge_tx_ring [2022-11-19 07:15:24,742 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_purge_tx_ring [2022-11-19 07:15:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure pci_zalloc_consistent [2022-11-19 07:15:24,742 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_zalloc_consistent [2022-11-19 07:15:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:15:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_rap [2022-11-19 07:15:24,743 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_rap [2022-11-19 07:15:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:15:24,743 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:15:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 07:15:24,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 07:15:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:15:24,744 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:15:24,744 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-19 07:15:24,744 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-19 07:15:24,744 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_bcr [2022-11-19 07:15:24,744 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_bcr [2022-11-19 07:15:24,744 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_read_bcr [2022-11-19 07:15:24,745 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_read_bcr [2022-11-19 07:15:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:15:24,745 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:15:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-19 07:15:24,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-19 07:15:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_init_ring [2022-11-19 07:15:24,745 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_init_ring [2022-11-19 07:15:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_close [2022-11-19 07:15:24,746 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_close [2022-11-19 07:15:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-19 07:15:24,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-19 07:15:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:15:24,746 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:15:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 07:15:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 07:15:24,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:15:24,747 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 07:15:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 07:15:24,747 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_suspend [2022-11-19 07:15:24,747 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_suspend [2022-11-19 07:15:24,747 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-19 07:15:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-19 07:15:24,748 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_netif_start [2022-11-19 07:15:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_netif_start [2022-11-19 07:15:24,748 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2022-11-19 07:15:24,748 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2022-11-19 07:15:24,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:15:24,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:15:24,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:15:24,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:15:24,749 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~~u16~0 [2022-11-19 07:15:24,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~~u16~0 [2022-11-19 07:15:24,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:15:24,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2022-11-19 07:15:24,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:15:24,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:15:24,750 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-19 07:15:24,750 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-19 07:15:24,750 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_csr [2022-11-19 07:15:24,750 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_csr [2022-11-19 07:15:24,750 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_open [2022-11-19 07:15:24,751 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_open [2022-11-19 07:15:24,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:15:24,751 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-19 07:15:24,751 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-19 07:15:24,751 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 07:15:24,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 07:15:24,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:15:24,752 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 07:15:24,752 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_load_multicast [2022-11-19 07:15:24,752 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_load_multicast [2022-11-19 07:15:24,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-19 07:15:24,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-19 07:15:24,752 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2022-11-19 07:15:24,752 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2022-11-19 07:15:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_reset [2022-11-19 07:15:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_reset [2022-11-19 07:15:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-19 07:15:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-19 07:15:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_3 [2022-11-19 07:15:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_3 [2022-11-19 07:15:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 07:15:24,754 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 07:15:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_restart [2022-11-19 07:15:24,754 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_restart [2022-11-19 07:15:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-19 07:15:24,754 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-19 07:15:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-19 07:15:24,754 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-19 07:15:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-19 07:15:24,755 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-19 07:15:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 07:15:24,755 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 07:15:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_read_csr [2022-11-19 07:15:24,755 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_read_csr [2022-11-19 07:15:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-19 07:15:24,756 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-19 07:15:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-19 07:15:24,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-19 07:15:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-19 07:15:24,756 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-19 07:15:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:15:24,756 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-19 07:15:24,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-11-19 07:15:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_reset [2022-11-19 07:15:24,757 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_reset [2022-11-19 07:15:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-19 07:15:24,757 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-19 07:15:24,757 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-19 07:15:24,757 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-19 07:15:24,759 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-19 07:15:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-19 07:15:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:15:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:15:25,879 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:15:25,883 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:15:26,176 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:15:35,417 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:15:37,767 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:15:37,768 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 07:15:37,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:15:37 BoogieIcfgContainer [2022-11-19 07:15:37,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:15:37,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:15:37,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:15:37,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:15:37,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:15:20" (1/3) ... [2022-11-19 07:15:37,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31be1981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:15:37, skipping insertion in model container [2022-11-19 07:15:37,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:23" (2/3) ... [2022-11-19 07:15:37,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31be1981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:15:37, skipping insertion in model container [2022-11-19 07:15:37,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:15:37" (3/3) ... [2022-11-19 07:15:37,787 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--pcnet32.ko-entry_point.cil.out.i [2022-11-19 07:15:37,808 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:15:37,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:15:37,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:15:37,930 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;@34ad643e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:15:37,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:15:37,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 1839 states, 1136 states have (on average 1.3380281690140845) internal successors, (1520), 1175 states have internal predecessors, (1520), 593 states have call successors, (593), 111 states have call predecessors, (593), 110 states have return successors, (584), 577 states have call predecessors, (584), 584 states have call successors, (584) [2022-11-19 07:15:38,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-11-19 07:15:38,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:38,003 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:38,004 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:38,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:38,010 INFO L85 PathProgramCache]: Analyzing trace with hash 496509982, now seen corresponding path program 1 times [2022-11-19 07:15:38,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:38,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712512609] [2022-11-19 07:15:38,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:38,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4617 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4617 trivial. 0 not checked. [2022-11-19 07:15:40,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:40,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712512609] [2022-11-19 07:15:40,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712512609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:40,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:40,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:40,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540614772] [2022-11-19 07:15:40,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:40,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:40,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:40,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:40,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:40,326 INFO L87 Difference]: Start difference. First operand has 1839 states, 1136 states have (on average 1.3380281690140845) internal successors, (1520), 1175 states have internal predecessors, (1520), 593 states have call successors, (593), 111 states have call predecessors, (593), 110 states have return successors, (584), 577 states have call predecessors, (584), 584 states have call successors, (584) Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-19 07:15:42,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:15:43,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:15:47,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:15:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:48,370 INFO L93 Difference]: Finished difference Result 4835 states and 7104 transitions. [2022-11-19 07:15:48,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:48,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 508 [2022-11-19 07:15:48,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:48,437 INFO L225 Difference]: With dead ends: 4835 [2022-11-19 07:15:48,437 INFO L226 Difference]: Without dead ends: 3036 [2022-11-19 07:15:48,458 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 [2022-11-19 07:15:48,464 INFO L413 NwaCegarLoop]: 2808 mSDtfsCounter, 1785 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 5192 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:48,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1787 Valid, 5192 Invalid, 570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 567 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2022-11-19 07:15:48,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2022-11-19 07:15:48,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 3033. [2022-11-19 07:15:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 1884 states have (on average 1.3301486199575372) internal successors, (2506), 1925 states have internal predecessors, (2506), 939 states have call successors, (939), 210 states have call predecessors, (939), 209 states have return successors, (940), 924 states have call predecessors, (940), 938 states have call successors, (940) [2022-11-19 07:15:48,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4385 transitions. [2022-11-19 07:15:48,789 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4385 transitions. Word has length 508 [2022-11-19 07:15:48,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:48,793 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 4385 transitions. [2022-11-19 07:15:48,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-19 07:15:48,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4385 transitions. [2022-11-19 07:15:48,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2022-11-19 07:15:48,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:48,819 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:48,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:15:48,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:48,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:48,821 INFO L85 PathProgramCache]: Analyzing trace with hash -557476133, now seen corresponding path program 1 times [2022-11-19 07:15:48,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:48,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389989516] [2022-11-19 07:15:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:48,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4629 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4629 trivial. 0 not checked. [2022-11-19 07:15:50,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:50,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389989516] [2022-11-19 07:15:50,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389989516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:50,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:50,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:50,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041563664] [2022-11-19 07:15:50,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:50,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:50,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:50,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:50,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:50,367 INFO L87 Difference]: Start difference. First operand 3033 states and 4385 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-19 07:15:52,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:15:54,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:15:56,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:56,985 INFO L93 Difference]: Finished difference Result 8373 states and 12079 transitions. [2022-11-19 07:15:56,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:56,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 517 [2022-11-19 07:15:56,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:57,026 INFO L225 Difference]: With dead ends: 8373 [2022-11-19 07:15:57,026 INFO L226 Difference]: Without dead ends: 5435 [2022-11-19 07:15:57,040 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 [2022-11-19 07:15:57,041 INFO L413 NwaCegarLoop]: 2830 mSDtfsCounter, 2237 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2237 SdHoareTripleChecker+Valid, 4980 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:57,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2237 Valid, 4980 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 589 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-19 07:15:57,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5435 states. [2022-11-19 07:15:57,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5435 to 5420. [2022-11-19 07:15:57,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5420 states, 3379 states have (on average 1.3314590115418763) internal successors, (4499), 3454 states have internal predecessors, (4499), 1649 states have call successors, (1649), 392 states have call predecessors, (1649), 391 states have return successors, (1670), 1617 states have call predecessors, (1670), 1648 states have call successors, (1670) [2022-11-19 07:15:57,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5420 states to 5420 states and 7818 transitions. [2022-11-19 07:15:57,354 INFO L78 Accepts]: Start accepts. Automaton has 5420 states and 7818 transitions. Word has length 517 [2022-11-19 07:15:57,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:57,360 INFO L495 AbstractCegarLoop]: Abstraction has 5420 states and 7818 transitions. [2022-11-19 07:15:57,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-19 07:15:57,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5420 states and 7818 transitions. [2022-11-19 07:15:57,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2022-11-19 07:15:57,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:57,387 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:57,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:15:57,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:57,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:57,398 INFO L85 PathProgramCache]: Analyzing trace with hash 709987256, now seen corresponding path program 1 times [2022-11-19 07:15:57,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:57,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019156979] [2022-11-19 07:15:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:57,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:58,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4720 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4720 trivial. 0 not checked. [2022-11-19 07:15:58,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:58,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019156979] [2022-11-19 07:15:58,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019156979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:58,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:58,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:58,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715828019] [2022-11-19 07:15:58,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:58,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:58,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:58,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:58,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:58,731 INFO L87 Difference]: Start difference. First operand 5420 states and 7818 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2022-11-19 07:16:00,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:16:04,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:16:05,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:05,166 INFO L93 Difference]: Finished difference Result 14227 states and 20493 transitions. [2022-11-19 07:16:05,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:16:05,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 609 [2022-11-19 07:16:05,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:05,228 INFO L225 Difference]: With dead ends: 14227 [2022-11-19 07:16:05,229 INFO L226 Difference]: Without dead ends: 8902 [2022-11-19 07:16:05,259 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 [2022-11-19 07:16:05,260 INFO L413 NwaCegarLoop]: 3629 mSDtfsCounter, 1961 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 5965 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:05,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1961 Valid, 5965 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 674 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-11-19 07:16:05,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8902 states. [2022-11-19 07:16:05,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8902 to 8899. [2022-11-19 07:16:05,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8899 states, 5568 states have (on average 1.336566091954023) internal successors, (7442), 5697 states have internal predecessors, (7442), 2673 states have call successors, (2673), 658 states have call predecessors, (2673), 657 states have return successors, (2694), 2620 states have call predecessors, (2694), 2672 states have call successors, (2694) [2022-11-19 07:16:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8899 states to 8899 states and 12809 transitions. [2022-11-19 07:16:05,871 INFO L78 Accepts]: Start accepts. Automaton has 8899 states and 12809 transitions. Word has length 609 [2022-11-19 07:16:05,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:05,873 INFO L495 AbstractCegarLoop]: Abstraction has 8899 states and 12809 transitions. [2022-11-19 07:16:05,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2022-11-19 07:16:05,874 INFO L276 IsEmpty]: Start isEmpty. Operand 8899 states and 12809 transitions. [2022-11-19 07:16:05,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2022-11-19 07:16:05,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:05,900 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 14, 14, 14, 14, 14, 14, 14, 14, 14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:16:05,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:16:05,901 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:05,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:05,902 INFO L85 PathProgramCache]: Analyzing trace with hash 973296665, now seen corresponding path program 1 times [2022-11-19 07:16:05,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:05,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856036250] [2022-11-19 07:16:05,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:05,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 5085 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5085 trivial. 0 not checked. [2022-11-19 07:16:07,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:07,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856036250] [2022-11-19 07:16:07,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856036250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:07,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:16:07,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:16:07,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726287376] [2022-11-19 07:16:07,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:07,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:16:07,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:07,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:16:07,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:16:07,227 INFO L87 Difference]: Start difference. First operand 8899 states and 12809 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2022-11-19 07:16:08,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:16:10,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:16:14,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:16:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:15,427 INFO L93 Difference]: Finished difference Result 21035 states and 30982 transitions. [2022-11-19 07:16:15,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:16:15,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 572 [2022-11-19 07:16:15,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:15,522 INFO L225 Difference]: With dead ends: 21035 [2022-11-19 07:16:15,522 INFO L226 Difference]: Without dead ends: 12231 [2022-11-19 07:16:15,575 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 [2022-11-19 07:16:15,576 INFO L413 NwaCegarLoop]: 3336 mSDtfsCounter, 713 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 5886 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:15,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 5886 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 601 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2022-11-19 07:16:15,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12231 states. [2022-11-19 07:16:16,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12231 to 8907. [2022-11-19 07:16:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8907 states, 5576 states have (on average 1.3360832137733143) internal successors, (7450), 5705 states have internal predecessors, (7450), 2673 states have call successors, (2673), 658 states have call predecessors, (2673), 657 states have return successors, (2694), 2620 states have call predecessors, (2694), 2672 states have call successors, (2694) [2022-11-19 07:16:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8907 states to 8907 states and 12817 transitions. [2022-11-19 07:16:16,244 INFO L78 Accepts]: Start accepts. Automaton has 8907 states and 12817 transitions. Word has length 572 [2022-11-19 07:16:16,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:16,245 INFO L495 AbstractCegarLoop]: Abstraction has 8907 states and 12817 transitions. [2022-11-19 07:16:16,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2022-11-19 07:16:16,246 INFO L276 IsEmpty]: Start isEmpty. Operand 8907 states and 12817 transitions. [2022-11-19 07:16:16,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2022-11-19 07:16:16,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:16,262 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 14, 14, 14, 14, 14, 14, 14, 14, 14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:16:16,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:16:16,262 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:16,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:16,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1782940715, now seen corresponding path program 1 times [2022-11-19 07:16:16,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:16,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749109271] [2022-11-19 07:16:16,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:16,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:21,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5085 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 4915 trivial. 0 not checked. [2022-11-19 07:16:21,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:21,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749109271] [2022-11-19 07:16:21,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749109271] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:16:21,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867724844] [2022-11-19 07:16:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:21,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:16:21,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:16:21,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:16:21,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:16:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:25,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 7017 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 07:16:25,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:16:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5085 backedges. 867 proven. 0 refuted. 0 times theorem prover too weak. 4218 trivial. 0 not checked. [2022-11-19 07:16:25,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:16:25,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867724844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:25,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:16:25,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2022-11-19 07:16:25,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220589877] [2022-11-19 07:16:25,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:25,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:16:25,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:25,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:16:25,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:16:25,727 INFO L87 Difference]: Start difference. First operand 8907 states and 12817 transitions. Second operand has 6 states, 4 states have (on average 33.75) internal successors, (135), 6 states have internal predecessors, (135), 3 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-19 07:16:27,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:16:33,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:16:34,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:34,861 INFO L93 Difference]: Finished difference Result 17802 states and 25670 transitions. [2022-11-19 07:16:34,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:16:34,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 33.75) internal successors, (135), 6 states have internal predecessors, (135), 3 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 574 [2022-11-19 07:16:34,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:34,908 INFO L225 Difference]: With dead ends: 17802 [2022-11-19 07:16:34,909 INFO L226 Difference]: Without dead ends: 8911 [2022-11-19 07:16:34,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:16:34,954 INFO L413 NwaCegarLoop]: 2339 mSDtfsCounter, 3 mSDsluCounter, 9278 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 35 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 11617 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:34,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 11617 Invalid, 1581 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 1544 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2022-11-19 07:16:34,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8911 states. [2022-11-19 07:16:35,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8911 to 8911. [2022-11-19 07:16:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8911 states, 5580 states have (on average 1.33584229390681) internal successors, (7454), 5709 states have internal predecessors, (7454), 2673 states have call successors, (2673), 658 states have call predecessors, (2673), 657 states have return successors, (2694), 2620 states have call predecessors, (2694), 2672 states have call successors, (2694) [2022-11-19 07:16:35,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8911 states to 8911 states and 12821 transitions. [2022-11-19 07:16:35,439 INFO L78 Accepts]: Start accepts. Automaton has 8911 states and 12821 transitions. Word has length 574 [2022-11-19 07:16:35,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:35,439 INFO L495 AbstractCegarLoop]: Abstraction has 8911 states and 12821 transitions. [2022-11-19 07:16:35,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 33.75) internal successors, (135), 6 states have internal predecessors, (135), 3 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-19 07:16:35,440 INFO L276 IsEmpty]: Start isEmpty. Operand 8911 states and 12821 transitions. [2022-11-19 07:16:35,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2022-11-19 07:16:35,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:35,457 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 35, 14, 14, 14, 14, 14, 14, 14, 14, 14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:16:35,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:16:35,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:16:35,671 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:35,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:35,672 INFO L85 PathProgramCache]: Analyzing trace with hash -941751262, now seen corresponding path program 1 times [2022-11-19 07:16:35,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:35,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962813001] [2022-11-19 07:16:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:35,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:41,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6905 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 6632 trivial. 0 not checked. [2022-11-19 07:16:41,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:41,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962813001] [2022-11-19 07:16:41,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962813001] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:16:41,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130434638] [2022-11-19 07:16:41,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:41,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:16:41,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:16:41,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:16:41,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c58f12c-1e3a-4fa7-8f6f-6d07b76c903c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:16:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:49,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 7542 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 07:16:49,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:16:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6905 backedges. 740 proven. 1 refuted. 0 times theorem prover too weak. 6164 trivial. 0 not checked. [2022-11-19 07:16:49,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:16:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6905 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 6632 trivial. 0 not checked. [2022-11-19 07:16:50,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130434638] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:16:50,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2074803644] [2022-11-19 07:16:50,878 INFO L159 IcfgInterpreter]: Started Sifa with 197 locations of interest [2022-11-19 07:16:50,878 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:16:50,884 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:16:50,890 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:16:50,891 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:16:56,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-19 07:16:56,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-19 07:16:57,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-19 07:16:57,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-19 07:17:00,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:01,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:02,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:03,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:03,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:04,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:05,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:06,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:06,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:07,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:07,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:08,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:08,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:09,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:09,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:09,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:10,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:14,759 INFO L217 Elim1Store]: Index analysis took 14289 ms