./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--smsc--smc91c92_cs.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f8a42be-e1ed-4975-9255-7982d4fbab76/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f8a42be-e1ed-4975-9255-7982d4fbab76/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f8a42be-e1ed-4975-9255-7982d4fbab76/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f8a42be-e1ed-4975-9255-7982d4fbab76/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f8a42be-e1ed-4975-9255-7982d4fbab76/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f8a42be-e1ed-4975-9255-7982d4fbab76/bin/utaipan-Xvt2sAort0 --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 3ecfb8b0fcef33da98f558e52c103bea043ca8b7f1be39029ddcf57b060bd03a --- 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-e04fb08 [2022-11-16 16:18:19,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:18:19,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:18:19,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:18:19,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:18:19,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:18:19,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:18:19,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:18:19,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:18:19,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:18:19,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:18:19,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:18:19,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:18:19,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:18:19,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:18:19,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:18:19,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:18:19,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:18:19,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:18:19,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:18:19,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:18:19,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:18:19,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:18:19,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:18:19,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:18:19,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:18:19,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:18:19,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:18:19,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:18:19,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:18:19,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:18:19,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:18:19,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:18:19,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:18:19,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:18:19,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:18:19,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:18:19,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:18:19,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:18:19,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:18:19,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:18:19,296 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f8a42be-e1ed-4975-9255-7982d4fbab76/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 16:18:19,318 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:18:19,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:18:19,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:18:19,319 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:18:19,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:18:19,320 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:18:19,320 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:18:19,321 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:18:19,321 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:18:19,321 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:18:19,321 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:18:19,322 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:18:19,322 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:18:19,322 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:18:19,322 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:18:19,323 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:18:19,323 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:18:19,323 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:18:19,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:18:19,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:18:19,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:18:19,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:18:19,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:18:19,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:18:19,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:18:19,325 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:18:19,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:18:19,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:18:19,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:18:19,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:18:19,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:18:19,327 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:18:19,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:18:19,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:18:19,328 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:18:19,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:18:19,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:18:19,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:18:19,329 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_3f8a42be-e1ed-4975-9255-7982d4fbab76/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f8a42be-e1ed-4975-9255-7982d4fbab76/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ecfb8b0fcef33da98f558e52c103bea043ca8b7f1be39029ddcf57b060bd03a [2022-11-16 16:18:19,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:18:19,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:18:19,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:18:19,656 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:18:19,657 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:18:19,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f8a42be-e1ed-4975-9255-7982d4fbab76/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2022-11-16 16:18:19,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f8a42be-e1ed-4975-9255-7982d4fbab76/bin/utaipan-Xvt2sAort0/data/93eadc6cb/b3a81a4a6f154a09b22d1903bb8dd19e/FLAGa285b15c6 [2022-11-16 16:18:20,634 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:18:20,634 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f8a42be-e1ed-4975-9255-7982d4fbab76/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2022-11-16 16:18:20,694 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f8a42be-e1ed-4975-9255-7982d4fbab76/bin/utaipan-Xvt2sAort0/data/93eadc6cb/b3a81a4a6f154a09b22d1903bb8dd19e/FLAGa285b15c6 [2022-11-16 16:18:21,079 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f8a42be-e1ed-4975-9255-7982d4fbab76/bin/utaipan-Xvt2sAort0/data/93eadc6cb/b3a81a4a6f154a09b22d1903bb8dd19e [2022-11-16 16:18:21,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:18:21,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:18:21,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:18:21,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:18:21,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:18:21,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:18:21" (1/1) ... [2022-11-16 16:18:21,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43fb5f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:21, skipping insertion in model container [2022-11-16 16:18:21,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:18:21" (1/1) ... [2022-11-16 16:18:21,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:18:21,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:18:23,170 WARN L229 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_3f8a42be-e1ed-4975-9255-7982d4fbab76/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2022-11-16 16:18:23,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:18:23,309 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:18:23,700 WARN L229 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_3f8a42be-e1ed-4975-9255-7982d4fbab76/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2022-11-16 16:18:23,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:18:23,920 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:18:23,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:23 WrapperNode [2022-11-16 16:18:23,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:18:23,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:18:23,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:18:23,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:18:23,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:23" (1/1) ... [2022-11-16 16:18:24,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:23" (1/1) ... [2022-11-16 16:18:24,264 INFO L138 Inliner]: procedures = 235, calls = 2270, calls flagged for inlining = 117, calls inlined = 113, statements flattened = 5126 [2022-11-16 16:18:24,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:18:24,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:18:24,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:18:24,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:18:24,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:23" (1/1) ... [2022-11-16 16:18:24,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:23" (1/1) ... [2022-11-16 16:18:24,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:23" (1/1) ... [2022-11-16 16:18:24,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:23" (1/1) ... [2022-11-16 16:18:24,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:23" (1/1) ... [2022-11-16 16:18:24,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:23" (1/1) ... [2022-11-16 16:18:24,531 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:23" (1/1) ... [2022-11-16 16:18:24,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:23" (1/1) ... [2022-11-16 16:18:24,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:18:24,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:18:24,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:18:24,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:18:24,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:23" (1/1) ... [2022-11-16 16:18:24,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:18:24,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f8a42be-e1ed-4975-9255-7982d4fbab76/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:18:24,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f8a42be-e1ed-4975-9255-7982d4fbab76/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:18:24,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f8a42be-e1ed-4975-9255-7982d4fbab76/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:18:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure smc_ioctl [2022-11-16 16:18:24,652 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_ioctl [2022-11-16 16:18:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-16 16:18:24,652 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-16 16:18:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-16 16:18:24,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-16 16:18:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure smc_hardware_send_packet [2022-11-16 16:18:24,652 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_hardware_send_packet [2022-11-16 16:18:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-16 16:18:24,653 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-16 16:18:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_detach [2022-11-16 16:18:24,653 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_detach [2022-11-16 16:18:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-11-16 16:18:24,653 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-11-16 16:18:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-16 16:18:24,653 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-16 16:18:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure mhz_3288_power [2022-11-16 16:18:24,654 INFO L138 BoogieDeclarations]: Found implementation of procedure mhz_3288_power [2022-11-16 16:18:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-16 16:18:24,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-16 16:18:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 16:18:24,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 16:18:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_request_io [2022-11-16 16:18:24,654 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_request_io [2022-11-16 16:18:24,655 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-16 16:18:24,655 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-16 16:18:24,655 INFO L130 BoogieDeclarations]: Found specification of procedure osi_load_firmware [2022-11-16 16:18:24,655 INFO L138 BoogieDeclarations]: Found implementation of procedure osi_load_firmware [2022-11-16 16:18:24,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-16 16:18:24,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-16 16:18:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 16:18:24,656 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 16:18:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 16:18:24,656 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 16:18:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-16 16:18:24,656 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-16 16:18:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure smc_set_xcvr [2022-11-16 16:18:24,657 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_set_xcvr [2022-11-16 16:18:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-11-16 16:18:24,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-11-16 16:18:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-16 16:18:24,657 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-16 16:18:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 16:18:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-16 16:18:24,657 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-16 16:18:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-16 16:18:24,658 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-16 16:18:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-16 16:18:24,659 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-16 16:18:24,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 16:18:24,660 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-16 16:18:24,661 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-16 16:18:24,661 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-16 16:18:24,661 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-16 16:18:24,661 INFO L130 BoogieDeclarations]: Found specification of procedure mot_config [2022-11-16 16:18:24,661 INFO L138 BoogieDeclarations]: Found implementation of procedure mot_config [2022-11-16 16:18:24,661 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_resume [2022-11-16 16:18:24,662 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_resume [2022-11-16 16:18:24,662 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-16 16:18:24,662 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-16 16:18:24,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-16 16:18:24,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-16 16:18:24,662 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-16 16:18:24,662 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-16 16:18:24,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:18:24,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 16:18:24,663 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_suspend [2022-11-16 16:18:24,663 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_suspend [2022-11-16 16:18:24,663 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2022-11-16 16:18:24,663 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2022-11-16 16:18:24,663 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-16 16:18:24,663 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-16 16:18:24,664 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-16 16:18:24,664 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-16 16:18:24,664 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-16 16:18:24,665 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-16 16:18:24,665 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-16 16:18:24,665 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-16 16:18:24,665 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-16 16:18:24,665 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-16 16:18:24,665 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-16 16:18:24,665 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-16 16:18:24,666 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2022-11-16 16:18:24,666 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2022-11-16 16:18:24,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 16:18:24,666 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-16 16:18:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-16 16:18:24,667 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-16 16:18:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-16 16:18:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-16 16:18:24,668 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-16 16:18:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-16 16:18:24,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-16 16:18:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-11-16 16:18:24,669 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-11-16 16:18:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure cvt_ascii_address [2022-11-16 16:18:24,670 INFO L138 BoogieDeclarations]: Found implementation of procedure cvt_ascii_address [2022-11-16 16:18:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 16:18:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev16 [2022-11-16 16:18:24,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev16 [2022-11-16 16:18:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_tuple [2022-11-16 16:18:24,670 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_tuple [2022-11-16 16:18:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_release [2022-11-16 16:18:24,671 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_release [2022-11-16 16:18:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 16:18:24,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 16:18:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-16 16:18:24,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-16 16:18:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 16:18:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-16 16:18:24,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-16 16:18:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev8 [2022-11-16 16:18:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev8 [2022-11-16 16:18:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:18:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-16 16:18:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-16 16:18:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 16:18:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_config [2022-11-16 16:18:24,679 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_config [2022-11-16 16:18:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure s9k_config [2022-11-16 16:18:24,684 INFO L138 BoogieDeclarations]: Found implementation of procedure s9k_config [2022-11-16 16:18:24,684 INFO L130 BoogieDeclarations]: Found specification of procedure smc_tx_timeout [2022-11-16 16:18:24,684 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_tx_timeout [2022-11-16 16:18:24,684 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-16 16:18:24,684 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-16 16:18:24,684 INFO L130 BoogieDeclarations]: Found specification of procedure smc_reset [2022-11-16 16:18:24,684 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_reset [2022-11-16 16:18:24,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:18:24,685 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-16 16:18:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-16 16:18:24,685 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-16 16:18:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-16 16:18:24,685 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-16 16:18:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-16 16:18:24,685 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-16 16:18:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-16 16:18:24,686 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-16 16:18:24,686 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-16 16:18:24,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:18:24,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:18:25,368 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:18:25,371 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:18:26,661 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-16 16:18:33,443 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:18:34,683 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:18:34,683 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 16:18:34,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:18:34 BoogieIcfgContainer [2022-11-16 16:18:34,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:18:34,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:18:34,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:18:34,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:18:34,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:18:21" (1/3) ... [2022-11-16 16:18:34,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90f4493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:18:34, skipping insertion in model container [2022-11-16 16:18:34,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:23" (2/3) ... [2022-11-16 16:18:34,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90f4493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:18:34, skipping insertion in model container [2022-11-16 16:18:34,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:18:34" (3/3) ... [2022-11-16 16:18:34,697 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2022-11-16 16:18:34,716 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:18:34,716 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:18:34,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:18:34,790 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;@728bb6b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:18:34,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:18:34,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 1159 states, 676 states have (on average 1.3387573964497042) internal successors, (905), 709 states have internal predecessors, (905), 418 states have call successors, (418), 64 states have call predecessors, (418), 63 states have return successors, (412), 405 states have call predecessors, (412), 412 states have call successors, (412) [2022-11-16 16:18:34,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-16 16:18:34,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:18:34,843 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-16 16:18:34,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:18:34,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:18:34,848 INFO L85 PathProgramCache]: Analyzing trace with hash 979333156, now seen corresponding path program 1 times [2022-11-16 16:18:34,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:18:34,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125015058] [2022-11-16 16:18:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:18:34,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:18:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:18:36,887 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-16 16:18:36,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:18:36,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125015058] [2022-11-16 16:18:36,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125015058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:18:36,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:18:36,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:18:36,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596420938] [2022-11-16 16:18:36,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:18:36,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:18:36,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:18:36,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:18:36,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:18:36,938 INFO L87 Difference]: Start difference. First operand has 1159 states, 676 states have (on average 1.3387573964497042) internal successors, (905), 709 states have internal predecessors, (905), 418 states have call successors, (418), 64 states have call predecessors, (418), 63 states have return successors, (412), 405 states have call predecessors, (412), 412 states have call successors, (412) Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-16 16:18:39,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 16:18:45,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 16:18:49,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:18:49,326 INFO L93 Difference]: Finished difference Result 4572 states and 6871 transitions. [2022-11-16 16:18:49,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:18:49,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 235 [2022-11-16 16:18:49,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:18:49,374 INFO L225 Difference]: With dead ends: 4572 [2022-11-16 16:18:49,375 INFO L226 Difference]: Without dead ends: 3396 [2022-11-16 16:18:49,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:18:49,392 INFO L413 NwaCegarLoop]: 2350 mSDtfsCounter, 4275 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 816 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4275 SdHoareTripleChecker+Valid, 4593 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 816 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-16 16:18:49,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4275 Valid, 4593 Invalid, 2206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [816 Valid, 1389 Invalid, 1 Unknown, 0 Unchecked, 11.8s Time] [2022-11-16 16:18:49,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3396 states. [2022-11-16 16:18:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3396 to 3382. [2022-11-16 16:18:49,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3382 states, 1987 states have (on average 1.3251132360342224) internal successors, (2633), 2056 states have internal predecessors, (2633), 1212 states have call successors, (1212), 183 states have call predecessors, (1212), 182 states have return successors, (1211), 1192 states have call predecessors, (1211), 1211 states have call successors, (1211) [2022-11-16 16:18:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 5056 transitions. [2022-11-16 16:18:49,859 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 5056 transitions. Word has length 235 [2022-11-16 16:18:49,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:18:49,860 INFO L495 AbstractCegarLoop]: Abstraction has 3382 states and 5056 transitions. [2022-11-16 16:18:49,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-16 16:18:49,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 5056 transitions. [2022-11-16 16:18:49,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-16 16:18:49,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:18:49,875 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-16 16:18:49,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:18:49,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:18:49,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:18:49,876 INFO L85 PathProgramCache]: Analyzing trace with hash 764173738, now seen corresponding path program 1 times [2022-11-16 16:18:49,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:18:49,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288691368] [2022-11-16 16:18:49,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:18:49,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:18:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:18:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-16 16:18:50,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:18:50,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288691368] [2022-11-16 16:18:50,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288691368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:18:50,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:18:50,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:18:50,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800915014] [2022-11-16 16:18:50,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:18:50,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:18:50,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:18:50,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:18:50,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:18:50,984 INFO L87 Difference]: Start difference. First operand 3382 states and 5056 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-16 16:18:53,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 16:18:59,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 16:19:03,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:19:03,400 INFO L93 Difference]: Finished difference Result 13463 states and 20134 transitions. [2022-11-16 16:19:03,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:19:03,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 234 [2022-11-16 16:19:03,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:19:03,472 INFO L225 Difference]: With dead ends: 13463 [2022-11-16 16:19:03,472 INFO L226 Difference]: Without dead ends: 10100 [2022-11-16 16:19:03,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:19:03,492 INFO L413 NwaCegarLoop]: 2332 mSDtfsCounter, 4217 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 810 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4217 SdHoareTripleChecker+Valid, 4541 SdHoareTripleChecker+Invalid, 2188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 810 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-16 16:19:03,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4217 Valid, 4541 Invalid, 2188 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [810 Valid, 1377 Invalid, 1 Unknown, 0 Unchecked, 11.6s Time] [2022-11-16 16:19:03,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10100 states. [2022-11-16 16:19:04,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10100 to 10088. [2022-11-16 16:19:04,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10088 states, 5937 states have (on average 1.3250800067374096) internal successors, (7867), 6134 states have internal predecessors, (7867), 3608 states have call successors, (3608), 543 states have call predecessors, (3608), 542 states have return successors, (3607), 3556 states have call predecessors, (3607), 3607 states have call successors, (3607) [2022-11-16 16:19:04,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10088 states to 10088 states and 15082 transitions. [2022-11-16 16:19:04,399 INFO L78 Accepts]: Start accepts. Automaton has 10088 states and 15082 transitions. Word has length 234 [2022-11-16 16:19:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:19:04,400 INFO L495 AbstractCegarLoop]: Abstraction has 10088 states and 15082 transitions. [2022-11-16 16:19:04,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-16 16:19:04,401 INFO L276 IsEmpty]: Start isEmpty. Operand 10088 states and 15082 transitions. [2022-11-16 16:19:04,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-16 16:19:04,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:19:04,416 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-16 16:19:04,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:19:04,417 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:19:04,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:19:04,419 INFO L85 PathProgramCache]: Analyzing trace with hash -999785678, now seen corresponding path program 1 times [2022-11-16 16:19:04,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:19:04,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123059244] [2022-11-16 16:19:04,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:19:04,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:19:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:19:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-16 16:19:05,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:19:05,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123059244] [2022-11-16 16:19:05,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123059244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:19:05,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:19:05,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:19:05,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217421926] [2022-11-16 16:19:05,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:19:05,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:19:05,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:19:05,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:19:05,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:19:05,372 INFO L87 Difference]: Start difference. First operand 10088 states and 15082 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-16 16:19:07,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 16:19:14,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:19:14,853 INFO L93 Difference]: Finished difference Result 40275 states and 60214 transitions. [2022-11-16 16:19:14,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:19:14,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 232 [2022-11-16 16:19:14,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:19:15,051 INFO L225 Difference]: With dead ends: 40275 [2022-11-16 16:19:15,051 INFO L226 Difference]: Without dead ends: 30206 [2022-11-16 16:19:15,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:19:15,114 INFO L413 NwaCegarLoop]: 2332 mSDtfsCounter, 3353 mSDsluCounter, 3424 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3353 SdHoareTripleChecker+Valid, 5756 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-16 16:19:15,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3353 Valid, 5756 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1518 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-11-16 16:19:15,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30206 states. [2022-11-16 16:19:17,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30206 to 30194. [2022-11-16 16:19:17,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30194 states, 17787 states have (on average 1.3242817788272334) internal successors, (23555), 18356 states have internal predecessors, (23555), 10784 states have call successors, (10784), 1623 states have call predecessors, (10784), 1622 states have return successors, (10783), 10648 states have call predecessors, (10783), 10783 states have call successors, (10783) [2022-11-16 16:19:17,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30194 states to 30194 states and 45122 transitions. [2022-11-16 16:19:17,733 INFO L78 Accepts]: Start accepts. Automaton has 30194 states and 45122 transitions. Word has length 232 [2022-11-16 16:19:17,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:19:17,734 INFO L495 AbstractCegarLoop]: Abstraction has 30194 states and 45122 transitions. [2022-11-16 16:19:17,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-16 16:19:17,735 INFO L276 IsEmpty]: Start isEmpty. Operand 30194 states and 45122 transitions. [2022-11-16 16:19:17,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-16 16:19:17,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:19:17,749 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-16 16:19:17,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 16:19:17,749 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:19:17,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:19:17,751 INFO L85 PathProgramCache]: Analyzing trace with hash 915389740, now seen corresponding path program 1 times [2022-11-16 16:19:17,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:19:17,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825134122] [2022-11-16 16:19:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:19:17,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:19:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:19:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-16 16:19:18,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:19:18,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825134122] [2022-11-16 16:19:18,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825134122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:19:18,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:19:18,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:19:18,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94297787] [2022-11-16 16:19:18,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:19:18,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:19:18,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:19:18,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:19:18,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:19:18,976 INFO L87 Difference]: Start difference. First operand 30194 states and 45122 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-16 16:19:21,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 16:19:23,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 16:19:30,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:19:30,099 INFO L93 Difference]: Finished difference Result 116855 states and 174414 transitions. [2022-11-16 16:19:30,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:19:30,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 233 [2022-11-16 16:19:30,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:19:30,561 INFO L225 Difference]: With dead ends: 116855 [2022-11-16 16:19:30,561 INFO L226 Difference]: Without dead ends: 86680 [2022-11-16 16:19:30,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:19:30,705 INFO L413 NwaCegarLoop]: 2332 mSDtfsCounter, 3352 mSDsluCounter, 3473 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3352 SdHoareTripleChecker+Valid, 5805 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-16 16:19:30,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3352 Valid, 5805 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1522 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2022-11-16 16:19:30,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86680 states. [2022-11-16 16:19:36,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86680 to 86668. [2022-11-16 16:19:36,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86668 states, 51305 states have (on average 1.3264009355813273) internal successors, (68051), 52810 states have internal predecessors, (68051), 30596 states have call successors, (30596), 4767 states have call predecessors, (30596), 4766 states have return successors, (30595), 30276 states have call predecessors, (30595), 30595 states have call successors, (30595) [2022-11-16 16:19:37,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86668 states to 86668 states and 129242 transitions. [2022-11-16 16:19:37,751 INFO L78 Accepts]: Start accepts. Automaton has 86668 states and 129242 transitions. Word has length 233 [2022-11-16 16:19:37,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:19:37,752 INFO L495 AbstractCegarLoop]: Abstraction has 86668 states and 129242 transitions. [2022-11-16 16:19:37,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-16 16:19:37,752 INFO L276 IsEmpty]: Start isEmpty. Operand 86668 states and 129242 transitions. [2022-11-16 16:19:38,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-11-16 16:19:38,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:19:38,232 INFO L195 NwaCegarLoop]: trace histogram [28, 15, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:19:38,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 16:19:38,233 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:19:38,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:19:38,233 INFO L85 PathProgramCache]: Analyzing trace with hash -473051214, now seen corresponding path program 1 times [2022-11-16 16:19:38,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:19:38,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795567125] [2022-11-16 16:19:38,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:19:38,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:19:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:19:39,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1171 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1169 trivial. 0 not checked. [2022-11-16 16:19:39,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:19:39,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795567125] [2022-11-16 16:19:39,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795567125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:19:39,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:19:39,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:19:39,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456022026] [2022-11-16 16:19:39,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:19:39,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:19:39,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:19:39,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:19:39,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:19:39,171 INFO L87 Difference]: Start difference. First operand 86668 states and 129242 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2022-11-16 16:19:41,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 16:19:42,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 16:19:51,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:19:51,215 INFO L93 Difference]: Finished difference Result 241184 states and 358596 transitions. [2022-11-16 16:19:51,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:19:51,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) Word has length 432 [2022-11-16 16:19:51,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:19:52,397 INFO L225 Difference]: With dead ends: 241184 [2022-11-16 16:19:52,397 INFO L226 Difference]: Without dead ends: 154535 [2022-11-16 16:19:52,690 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 [2022-11-16 16:19:52,690 INFO L413 NwaCegarLoop]: 2146 mSDtfsCounter, 1334 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 3589 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-16 16:19:52,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 3589 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 499 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-16 16:19:52,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154535 states. [2022-11-16 16:20:02,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154535 to 154289. [2022-11-16 16:20:02,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154289 states, 90733 states have (on average 1.3175911741042399) internal successors, (119549), 93903 states have internal predecessors, (119549), 54753 states have call successors, (54753), 8884 states have call predecessors, (54753), 8802 states have return successors, (54752), 53709 states have call predecessors, (54752), 54752 states have call successors, (54752) [2022-11-16 16:20:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154289 states to 154289 states and 229054 transitions. [2022-11-16 16:20:03,847 INFO L78 Accepts]: Start accepts. Automaton has 154289 states and 229054 transitions. Word has length 432 [2022-11-16 16:20:03,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:20:03,848 INFO L495 AbstractCegarLoop]: Abstraction has 154289 states and 229054 transitions. [2022-11-16 16:20:03,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2022-11-16 16:20:03,849 INFO L276 IsEmpty]: Start isEmpty. Operand 154289 states and 229054 transitions. [2022-11-16 16:20:04,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2022-11-16 16:20:04,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:20:04,128 INFO L195 NwaCegarLoop]: trace histogram [29, 18, 9, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:20:04,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 16:20:04,128 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:20:04,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:20:04,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1020646877, now seen corresponding path program 1 times [2022-11-16 16:20:04,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:20:04,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335338045] [2022-11-16 16:20:04,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:20:04,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:20:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:20:05,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1459 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1454 trivial. 0 not checked. [2022-11-16 16:20:05,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:20:05,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335338045] [2022-11-16 16:20:05,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335338045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:20:05,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:20:05,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:20:05,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532906273] [2022-11-16 16:20:05,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:20:05,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:20:05,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:20:05,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:20:05,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:20:05,071 INFO L87 Difference]: Start difference. First operand 154289 states and 229054 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) [2022-11-16 16:20:07,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 16:20:08,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []