./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI --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 44610cb4431513b4b9429bb48b9c496068c0f3a3836e87f731a95bf3b77832c9 --- 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-5e519f3 [2022-11-03 01:49:24,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:49:24,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:49:24,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:49:24,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:49:24,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:49:24,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:49:24,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:49:24,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:49:24,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:49:24,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:49:24,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:49:24,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:49:24,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:49:24,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:49:24,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:49:24,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:49:24,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:49:24,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:49:24,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:49:24,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:49:24,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:49:24,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:49:24,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:49:24,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:49:24,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:49:24,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:49:24,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:49:24,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:49:24,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:49:24,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:49:24,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:49:24,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:49:24,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:49:24,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:49:24,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:49:24,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:49:24,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:49:24,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:49:24,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:49:24,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:49:24,268 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:49:24,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:49:24,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:49:24,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:49:24,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:49:24,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:49:24,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:49:24,316 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:49:24,317 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:49:24,317 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:49:24,317 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:49:24,318 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:49:24,318 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:49:24,319 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:49:24,319 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:49:24,319 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:49:24,319 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:49:24,320 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:49:24,320 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:49:24,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:49:24,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:49:24,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:49:24,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:49:24,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:49:24,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:49:24,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:49:24,322 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:49:24,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:49:24,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:49:24,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:49:24,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:49:24,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:49:24,325 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:49:24,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:49:24,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:49:24,326 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:49:24,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:49:24,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:49:24,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:49:24,327 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_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44610cb4431513b4b9429bb48b9c496068c0f3a3836e87f731a95bf3b77832c9 [2022-11-03 01:49:24,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:49:24,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:49:24,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:49:24,642 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:49:24,643 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:49:24,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i [2022-11-03 01:49:24,732 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/data/cea5d5f3d/52b72e1473a14992ab213dab509c9fe2/FLAGdb540d237 [2022-11-03 01:49:25,910 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:49:25,911 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i [2022-11-03 01:49:25,978 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/data/cea5d5f3d/52b72e1473a14992ab213dab509c9fe2/FLAGdb540d237 [2022-11-03 01:49:26,100 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/data/cea5d5f3d/52b72e1473a14992ab213dab509c9fe2 [2022-11-03 01:49:26,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:49:26,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:49:26,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:49:26,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:49:26,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:49:26,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:49:26" (1/1) ... [2022-11-03 01:49:26,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760eba90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:26, skipping insertion in model container [2022-11-03 01:49:26,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:49:26" (1/1) ... [2022-11-03 01:49:26,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:49:26,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:49:27,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i[193558,193571] [2022-11-03 01:49:31,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:49:31,729 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:49:31,826 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i[193558,193571] [2022-11-03 01:49:32,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:49:32,467 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:49:32,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:32 WrapperNode [2022-11-03 01:49:32,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:49:32,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:49:32,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:49:32,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:49:32,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:32" (1/1) ... [2022-11-03 01:49:32,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:32" (1/1) ... [2022-11-03 01:49:33,236 INFO L138 Inliner]: procedures = 537, calls = 8428, calls flagged for inlining = 241, calls inlined = 238, statements flattened = 14899 [2022-11-03 01:49:33,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:49:33,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:49:33,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:49:33,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:49:33,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:32" (1/1) ... [2022-11-03 01:49:33,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:32" (1/1) ... [2022-11-03 01:49:33,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:32" (1/1) ... [2022-11-03 01:49:33,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:32" (1/1) ... [2022-11-03 01:49:33,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:32" (1/1) ... [2022-11-03 01:49:33,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:32" (1/1) ... [2022-11-03 01:49:33,784 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:32" (1/1) ... [2022-11-03 01:49:33,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:32" (1/1) ... [2022-11-03 01:49:33,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:49:33,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:49:33,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:49:33,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:49:33,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:32" (1/1) ... [2022-11-03 01:49:33,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:49:33,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:49:33,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:49:34,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:49:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 01:49:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 01:49:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-03 01:49:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-03 01:49:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure zd_ioread32_locked [2022-11-03 01:49:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_ioread32_locked [2022-11-03 01:49:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_tx_info_clear_status [2022-11-03 01:49:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_tx_info_clear_status [2022-11-03 01:49:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure zd_check_signal [2022-11-03 01:49:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_check_signal [2022-11-03 01:49:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-03 01:49:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-03 01:49:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-03 01:49:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-03 01:49:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure post_reset [2022-11-03 01:49:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure post_reset [2022-11-03 01:49:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_init_hw [2022-11-03 01:49:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_init_hw [2022-11-03 01:49:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:49:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:49:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-03 01:49:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-03 01:49:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2022-11-03 01:49:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2022-11-03 01:49:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_to_usbdev [2022-11-03 01:49:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_to_usbdev [2022-11-03 01:49:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_rx [2022-11-03 01:49:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_rx [2022-11-03 01:49:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_set_channel [2022-11-03 01:49:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_set_channel [2022-11-03 01:49:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_clear [2022-11-03 01:49:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_clear [2022-11-03 01:49:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure zd_switch_radio_off [2022-11-03 01:49:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_switch_radio_off [2022-11-03 01:49:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure free_rx_urb [2022-11-03 01:49:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rx_urb [2022-11-03 01:49:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_configure_filter [2022-11-03 01:49:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_configure_filter [2022-11-03 01:49:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure usb_queue_reset_device [2022-11-03 01:49:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_queue_reset_device [2022-11-03 01:49:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 01:49:34,118 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 01:49:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure fw_reg_addr [2022-11-03 01:49:34,118 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_reg_addr [2022-11-03 01:49:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_beacon_get [2022-11-03 01:49:34,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_beacon_get [2022-11-03 01:49:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure zd_switch_radio_on [2022-11-03 01:49:34,118 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_switch_radio_on [2022-11-03 01:49:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 01:49:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_config [2022-11-03 01:49:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_config [2022-11-03 01:49:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-03 01:49:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-03 01:49:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure uw2453_init_mode [2022-11-03 01:49:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure uw2453_init_mode [2022-11-03 01:49:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-03 01:49:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2022-11-03 01:49:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2022-11-03 01:49:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_enable_hwint [2022-11-03 01:49:34,120 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_enable_hwint [2022-11-03 01:49:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 01:49:34,120 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 01:49:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:49:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_lock_phy_regs [2022-11-03 01:49:34,120 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_lock_phy_regs [2022-11-03 01:49:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 01:49:34,120 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 01:49:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rf_to_chip [2022-11-03 01:49:34,121 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rf_to_chip [2022-11-03 01:49:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_free_cur_beacon_locked [2022-11-03 01:49:34,121 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_free_cur_beacon_locked [2022-11-03 01:49:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_is_first [2022-11-03 01:49:34,121 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_is_first [2022-11-03 01:49:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_iowrite16v_async [2022-11-03 01:49:34,121 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_iowrite16v_async [2022-11-03 01:49:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-11-03 01:49:34,121 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-11-03 01:49:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 01:49:34,121 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 01:49:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rfwrite_locked [2022-11-03 01:49:34,122 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rfwrite_locked [2022-11-03 01:49:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2022-11-03 01:49:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2022-11-03 01:49:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:49:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 01:49:34,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 01:49:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:49:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_is_locked [2022-11-03 01:49:34,137 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_is_locked [2022-11-03 01:49:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_free_cur_beacon [2022-11-03 01:49:34,137 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_free_cur_beacon [2022-11-03 01:49:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_remove_interface [2022-11-03 01:49:34,137 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_remove_interface [2022-11-03 01:49:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:49:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure check_read_regs [2022-11-03 01:49:34,138 INFO L138 BoogieDeclarations]: Found implementation of procedure check_read_regs [2022-11-03 01:49:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rf_clear [2022-11-03 01:49:34,138 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rf_clear [2022-11-03 01:49:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx_packet [2022-11-03 01:49:34,138 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx_packet [2022-11-03 01:49:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_stop [2022-11-03 01:49:34,139 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_stop [2022-11-03 01:49:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure zd_iowrite32a_locked [2022-11-03 01:49:34,139 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_iowrite32a_locked [2022-11-03 01:49:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure zd1211b_al7230b_finalize [2022-11-03 01:49:34,139 INFO L138 BoogieDeclarations]: Found implementation of procedure zd1211b_al7230b_finalize [2022-11-03 01:49:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:49:34,140 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:49:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___skb_dequeue_24 [2022-11-03 01:49:34,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___skb_dequeue_24 [2022-11-03 01:49:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure zd_iowrite16_locked [2022-11-03 01:49:34,140 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_iowrite16_locked [2022-11-03 01:49:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 01:49:34,141 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 01:49:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure test_init [2022-11-03 01:49:34,141 INFO L138 BoogieDeclarations]: Found implementation of procedure test_init [2022-11-03 01:49:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-11-03 01:49:34,141 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-11-03 01:49:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure request_fw_file [2022-11-03 01:49:34,142 INFO L138 BoogieDeclarations]: Found implementation of procedure request_fw_file [2022-11-03 01:49:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure dump_cr [2022-11-03 01:49:34,142 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_cr [2022-11-03 01:49:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure usb_pipe_endpoint [2022-11-03 01:49:34,142 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_pipe_endpoint [2022-11-03 01:49:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mc_clear [2022-11-03 01:49:34,143 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mc_clear [2022-11-03 01:49:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:49:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure zd_write_mac_addr_common [2022-11-03 01:49:34,143 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_write_mac_addr_common [2022-11-03 01:49:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_prepare_multicast [2022-11-03 01:49:34,143 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_prepare_multicast [2022-11-03 01:49:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-11-03 01:49:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-11-03 01:49:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_disable_tx [2022-11-03 01:49:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_disable_tx [2022-11-03 01:49:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_to_hw [2022-11-03 01:49:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_to_hw [2022-11-03 01:49:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:49:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2022-11-03 01:49:34,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2022-11-03 01:49:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_ioread16 [2022-11-03 01:49:34,145 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_ioread16 [2022-11-03 01:49:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:49:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_resume [2022-11-03 01:49:34,145 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_resume [2022-11-03 01:49:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 01:49:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:49:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:49:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-03 01:49:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-03 01:49:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure zd_ioread32v_locked [2022-11-03 01:49:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_ioread32v_locked [2022-11-03 01:49:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure get_fw_name [2022-11-03 01:49:34,147 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fw_name [2022-11-03 01:49:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 01:49:34,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 01:49:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_is_zd1211b [2022-11-03 01:49:34,147 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_is_zd1211b [2022-11-03 01:49:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 01:49:34,148 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 01:49:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure set_beacon_interval [2022-11-03 01:49:34,148 INFO L138 BoogieDeclarations]: Found implementation of procedure set_beacon_interval [2022-11-03 01:49:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_filter [2022-11-03 01:49:34,148 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_filter [2022-11-03 01:49:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure uw2453_synth_set_channel [2022-11-03 01:49:34,149 INFO L138 BoogieDeclarations]: Found implementation of procedure uw2453_synth_set_channel [2022-11-03 01:49:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 01:49:34,149 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 01:49:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_iowrite16v_async_start [2022-11-03 01:49:34,149 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_iowrite16v_async_start [2022-11-03 01:49:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_disable_rx [2022-11-03 01:49:34,149 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_disable_rx [2022-11-03 01:49:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure zd1211b_al2230_finalize_rf [2022-11-03 01:49:34,150 INFO L138 BoogieDeclarations]: Found implementation of procedure zd1211b_al2230_finalize_rf [2022-11-03 01:49:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure zd_iowrite32_locked [2022-11-03 01:49:34,150 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_iowrite32_locked [2022-11-03 01:49:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure handle_regs_int_override [2022-11-03 01:49:34,150 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_regs_int_override [2022-11-03 01:49:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_set_multicast_hash [2022-11-03 01:49:34,151 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_set_multicast_hash [2022-11-03 01:49:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-11-03 01:49:34,151 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-11-03 01:49:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 01:49:34,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 01:49:34,166 INFO L130 BoogieDeclarations]: Found specification of procedure disable_hwint [2022-11-03 01:49:34,166 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_hwint [2022-11-03 01:49:34,166 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 01:49:34,166 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 01:49:34,167 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_tx_status [2022-11-03 01:49:34,167 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_tx_status [2022-11-03 01:49:34,167 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_disable_rxtx [2022-11-03 01:49:34,167 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_disable_rxtx [2022-11-03 01:49:34,167 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2022-11-03 01:49:34,167 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2022-11-03 01:49:34,168 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_unlock_phy_regs [2022-11-03 01:49:34,168 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_unlock_phy_regs [2022-11-03 01:49:34,168 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 01:49:34,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 01:49:34,168 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 01:49:34,168 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 01:49:34,168 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rf_name [2022-11-03 01:49:34,169 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rf_name [2022-11-03 01:49:34,169 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-03 01:49:34,169 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-03 01:49:34,169 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2022-11-03 01:49:34,169 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2022-11-03 01:49:34,169 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_clear [2022-11-03 01:49:34,170 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_clear [2022-11-03 01:49:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rfwritev_locked [2022-11-03 01:49:34,170 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rfwritev_locked [2022-11-03 01:49:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:49:34,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:49:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_wake_queues [2022-11-03 01:49:34,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_wake_queues [2022-11-03 01:49:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_control_leds [2022-11-03 01:49:34,171 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_control_leds [2022-11-03 01:49:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-03 01:49:34,171 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-03 01:49:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 01:49:34,171 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 01:49:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure scnprint_id___0 [2022-11-03 01:49:34,172 INFO L138 BoogieDeclarations]: Found implementation of procedure scnprint_id___0 [2022-11-03 01:49:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_pspoll [2022-11-03 01:49:34,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_pspoll [2022-11-03 01:49:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_iowrite16v_async_end [2022-11-03 01:49:34,172 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_iowrite16v_async_end [2022-11-03 01:49:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:49:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:49:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure upload_code [2022-11-03 01:49:34,173 INFO L138 BoogieDeclarations]: Found implementation of procedure upload_code [2022-11-03 01:49:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:49:34,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:49:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-03 01:49:34,174 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-03 01:49:34,174 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rfwrite_cr_locked [2022-11-03 01:49:34,174 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rfwrite_cr_locked [2022-11-03 01:49:34,174 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~TO~int [2022-11-03 01:49:34,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~TO~int [2022-11-03 01:49:34,174 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-03 01:49:34,174 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-03 01:49:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure set_rts_cts [2022-11-03 01:49:34,175 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rts_cts [2022-11-03 01:49:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_to_mac [2022-11-03 01:49:34,175 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_to_mac [2022-11-03 01:49:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure __zd_usb_disable_rx [2022-11-03 01:49:34,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __zd_usb_disable_rx [2022-11-03 01:49:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure zd_submit_waiting_urb [2022-11-03 01:49:34,176 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_submit_waiting_urb [2022-11-03 01:49:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_stop [2022-11-03 01:49:34,176 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_stop [2022-11-03 01:49:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_tx_status_irqsafe [2022-11-03 01:49:34,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_tx_status_irqsafe [2022-11-03 01:49:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_reset_rx_idle_timer [2022-11-03 01:49:34,177 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_reset_rx_idle_timer [2022-11-03 01:49:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 01:49:34,177 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 01:49:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-03 01:49:34,177 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-03 01:49:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:49:34,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:49:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure zd_set_beacon_interval [2022-11-03 01:49:34,178 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_set_beacon_interval [2022-11-03 01:49:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 01:49:34,178 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 01:49:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:49:34,179 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:49:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcdDevice [2022-11-03 01:49:34,179 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcdDevice [2022-11-03 01:49:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_disable_int [2022-11-03 01:49:34,179 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_disable_int [2022-11-03 01:49:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:49:34,179 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:49:34,180 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-11-03 01:49:34,180 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-11-03 01:49:34,180 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-03 01:49:34,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-03 01:49:34,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:49:34,180 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 01:49:34,180 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 01:49:34,181 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rf_init_hw [2022-11-03 01:49:34,181 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rf_init_hw [2022-11-03 01:49:34,181 INFO L130 BoogieDeclarations]: Found specification of procedure __zd_usb_enable_rx [2022-11-03 01:49:34,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __zd_usb_enable_rx [2022-11-03 01:49:34,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_int_regs_length [2022-11-03 01:49:34,181 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_int_regs_length [2022-11-03 01:49:34,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:49:34,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-03 01:49:34,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-03 01:49:34,182 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-11-03 01:49:34,182 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-11-03 01:49:34,182 INFO L130 BoogieDeclarations]: Found specification of procedure zd_iowrite32 [2022-11-03 01:49:34,182 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_iowrite32 [2022-11-03 01:49:34,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:49:34,183 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_config_beacon [2022-11-03 01:49:34,183 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_config_beacon [2022-11-03 01:49:34,183 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 01:49:34,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 01:49:34,183 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 01:49:34,183 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 01:49:34,184 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 01:49:34,184 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 01:49:34,184 INFO L130 BoogieDeclarations]: Found specification of procedure zd_hw_mac [2022-11-03 01:49:34,184 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_hw_mac [2022-11-03 01:49:34,184 INFO L130 BoogieDeclarations]: Found specification of procedure read_values [2022-11-03 01:49:34,184 INFO L138 BoogieDeclarations]: Found implementation of procedure read_values [2022-11-03 01:49:34,184 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-03 01:49:34,185 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-03 01:49:34,193 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 01:49:34,193 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 01:49:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-03 01:49:34,194 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-03 01:49:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_start [2022-11-03 01:49:34,194 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_start [2022-11-03 01:49:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-03 01:49:34,194 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-03 01:49:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-03 01:49:34,195 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-03 01:49:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 01:49:34,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 01:49:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect [2022-11-03 01:49:34,195 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect [2022-11-03 01:49:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure zd_intf_to_hw [2022-11-03 01:49:34,195 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_intf_to_hw [2022-11-03 01:49:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure inc_addr [2022-11-03 01:49:34,196 INFO L138 BoogieDeclarations]: Found implementation of procedure inc_addr [2022-11-03 01:49:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-11-03 01:49:34,196 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-11-03 01:49:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_to_mac [2022-11-03 01:49:34,196 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_to_mac [2022-11-03 01:49:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rfwritev_cr_locked [2022-11-03 01:49:34,197 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rfwritev_cr_locked [2022-11-03 01:49:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-03 01:49:34,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-03 01:49:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure pre_reset [2022-11-03 01:49:34,197 INFO L138 BoogieDeclarations]: Found implementation of procedure pre_reset [2022-11-03 01:49:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 01:49:34,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 01:49:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 01:49:34,198 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 01:49:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_switch_radio_on [2022-11-03 01:49:34,198 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_switch_radio_on [2022-11-03 01:49:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-03 01:49:34,198 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-03 01:49:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:49:34,199 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:49:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-11-03 01:49:34,199 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-11-03 01:49:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure uw2453_write_vco_cfg [2022-11-03 01:49:34,199 INFO L138 BoogieDeclarations]: Found implementation of procedure uw2453_write_vco_cfg [2022-11-03 01:49:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:49:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_switch_radio_off [2022-11-03 01:49:34,200 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_switch_radio_off [2022-11-03 01:49:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure zd_ep_regs_out_msg [2022-11-03 01:49:34,200 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_ep_regs_out_msg [2022-11-03 01:49:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-03 01:49:34,200 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-03 01:49:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:49:34,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:49:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_to_chip [2022-11-03 01:49:34,201 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_to_chip [2022-11-03 01:49:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_disable_hwint [2022-11-03 01:49:34,201 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_disable_hwint [2022-11-03 01:49:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_ioread16v [2022-11-03 01:49:34,201 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_ioread16v [2022-11-03 01:49:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_init_hw [2022-11-03 01:49:34,202 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_init_hw [2022-11-03 01:49:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure zd_ioread16_locked [2022-11-03 01:49:34,202 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_ioread16_locked [2022-11-03 01:49:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_init_hw [2022-11-03 01:49:34,202 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_init_hw [2022-11-03 01:49:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_bss_info_changed [2022-11-03 01:49:34,203 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_bss_info_changed [2022-11-03 01:49:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_RXCB [2022-11-03 01:49:34,203 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_RXCB [2022-11-03 01:49:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2022-11-03 01:49:34,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2022-11-03 01:49:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-11-03 01:49:34,204 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-11-03 01:49:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_get_tsf [2022-11-03 01:49:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_get_tsf [2022-11-03 01:49:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_disable_int [2022-11-03 01:49:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_disable_int [2022-11-03 01:49:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-03 01:49:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-03 01:49:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2022-11-03 01:49:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2022-11-03 01:49:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure zd_ioread16v_locked [2022-11-03 01:49:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_ioread16v_locked [2022-11-03 01:49:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 01:49:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 01:49:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_enable_int [2022-11-03 01:49:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_enable_int [2022-11-03 01:49:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2022-11-03 01:49:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2022-11-03 01:49:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 01:49:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 01:49:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure _zd_iowrite32v_async_locked [2022-11-03 01:49:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure _zd_iowrite32v_async_locked [2022-11-03 01:49:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure set_mac_and_bssid [2022-11-03 01:49:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mac_and_bssid [2022-11-03 01:49:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_tx [2022-11-03 01:49:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_tx [2022-11-03 01:49:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_add_interface [2022-11-03 01:49:34,222 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_add_interface [2022-11-03 01:49:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:49:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure zd_write_mac_addr [2022-11-03 01:49:34,222 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_write_mac_addr [2022-11-03 01:49:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2022-11-03 01:49:34,222 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2022-11-03 01:49:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure zd_iowrite16a_locked [2022-11-03 01:49:34,223 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_iowrite16a_locked [2022-11-03 01:49:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-03 01:49:34,223 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-03 01:49:35,965 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:49:35,975 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:49:38,852 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:53:49,983 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:53:53,116 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:53:53,117 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 01:53:53,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:53:53 BoogieIcfgContainer [2022-11-03 01:53:53,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:53:53,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:53:53,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:53:53,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:53:53,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:49:26" (1/3) ... [2022-11-03 01:53:53,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dc726c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:53:53, skipping insertion in model container [2022-11-03 01:53:53,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:32" (2/3) ... [2022-11-03 01:53:53,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dc726c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:53:53, skipping insertion in model container [2022-11-03 01:53:53,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:53:53" (3/3) ... [2022-11-03 01:53:53,142 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i [2022-11-03 01:53:53,167 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:53:53,167 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:53:53,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:53:53,342 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;@7f4bdcdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:53:53,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:53:53,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 3254 states, 1930 states have (on average 1.304663212435233) internal successors, (2518), 2025 states have internal predecessors, (2518), 1126 states have call successors, (1126), 197 states have call predecessors, (1126), 196 states have return successors, (1122), 1117 states have call predecessors, (1122), 1122 states have call successors, (1122) [2022-11-03 01:53:53,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 01:53:53,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:53,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:53,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:53,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:53,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2131203342, now seen corresponding path program 1 times [2022-11-03 01:53:53,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:53,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672521319] [2022-11-03 01:53:53,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:53,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:53:55,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:55,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672521319] [2022-11-03 01:53:55,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672521319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:55,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:55,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:55,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535698312] [2022-11-03 01:53:55,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:55,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:55,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:55,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:55,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:55,116 INFO L87 Difference]: Start difference. First operand has 3254 states, 1930 states have (on average 1.304663212435233) internal successors, (2518), 2025 states have internal predecessors, (2518), 1126 states have call successors, (1126), 197 states have call predecessors, (1126), 196 states have return successors, (1122), 1117 states have call predecessors, (1122), 1122 states have call successors, (1122) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:54:00,009 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 [] [2022-11-03 01:54:04,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:54:12,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:14,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:14,208 INFO L93 Difference]: Finished difference Result 9689 states and 14316 transitions. [2022-11-03 01:54:14,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:54:14,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-11-03 01:54:14,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:14,298 INFO L225 Difference]: With dead ends: 9689 [2022-11-03 01:54:14,299 INFO L226 Difference]: Without dead ends: 6412 [2022-11-03 01:54:14,329 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 [2022-11-03 01:54:14,332 INFO L413 NwaCegarLoop]: 5458 mSDtfsCounter, 4663 mSDsluCounter, 4730 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4668 SdHoareTripleChecker+Valid, 9744 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:14,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4668 Valid, 9744 Invalid, 927 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 916 Invalid, 2 Unknown, 0 Unchecked, 18.4s Time] [2022-11-03 01:54:14,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6412 states. [2022-11-03 01:54:14,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6412 to 6411. [2022-11-03 01:54:14,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6411 states, 3804 states have (on average 1.2975814931650893) internal successors, (4936), 3980 states have internal predecessors, (4936), 2217 states have call successors, (2217), 391 states have call predecessors, (2217), 389 states have return successors, (2218), 2205 states have call predecessors, (2218), 2216 states have call successors, (2218) [2022-11-03 01:54:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 9371 transitions. [2022-11-03 01:54:14,974 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 9371 transitions. Word has length 25 [2022-11-03 01:54:14,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:14,977 INFO L495 AbstractCegarLoop]: Abstraction has 6411 states and 9371 transitions. [2022-11-03 01:54:14,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:54:14,978 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 9371 transitions. [2022-11-03 01:54:14,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 01:54:14,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:14,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:14,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:54:14,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:14,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:14,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1271752750, now seen corresponding path program 1 times [2022-11-03 01:54:14,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:54:14,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754091954] [2022-11-03 01:54:14,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:14,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:54:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:16,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:54:16,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:54:16,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754091954] [2022-11-03 01:54:16,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754091954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:16,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:16,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:54:16,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840002388] [2022-11-03 01:54:16,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:16,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:54:16,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:54:16,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:54:16,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:54:16,687 INFO L87 Difference]: Start difference. First operand 6411 states and 9371 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:54:24,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:54:30,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:39,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:39,451 INFO L93 Difference]: Finished difference Result 12775 states and 18788 transitions. [2022-11-03 01:54:39,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:54:39,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-11-03 01:54:39,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:39,585 INFO L225 Difference]: With dead ends: 12775 [2022-11-03 01:54:39,585 INFO L226 Difference]: Without dead ends: 12764 [2022-11-03 01:54:39,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:54:39,602 INFO L413 NwaCegarLoop]: 5514 mSDtfsCounter, 4649 mSDsluCounter, 10762 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4649 SdHoareTripleChecker+Valid, 15366 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:39,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4649 Valid, 15366 Invalid, 1406 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1404 Invalid, 1 Unknown, 0 Unchecked, 22.1s Time] [2022-11-03 01:54:39,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12764 states. [2022-11-03 01:54:40,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12764 to 12755. [2022-11-03 01:54:40,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12755 states, 7565 states have (on average 1.2978189028420357) internal successors, (9818), 7921 states have internal predecessors, (9818), 4413 states have call successors, (4413), 780 states have call predecessors, (4413), 776 states have return successors, (4532), 4383 states have call predecessors, (4532), 4412 states have call successors, (4532) [2022-11-03 01:54:40,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12755 states to 12755 states and 18763 transitions. [2022-11-03 01:54:40,473 INFO L78 Accepts]: Start accepts. Automaton has 12755 states and 18763 transitions. Word has length 26 [2022-11-03 01:54:40,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:40,474 INFO L495 AbstractCegarLoop]: Abstraction has 12755 states and 18763 transitions. [2022-11-03 01:54:40,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:54:40,475 INFO L276 IsEmpty]: Start isEmpty. Operand 12755 states and 18763 transitions. [2022-11-03 01:54:40,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-03 01:54:40,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:40,511 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 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] [2022-11-03 01:54:40,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:54:40,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:40,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:40,512 INFO L85 PathProgramCache]: Analyzing trace with hash -565499638, now seen corresponding path program 1 times [2022-11-03 01:54:40,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:54:40,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617917919] [2022-11-03 01:54:40,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:40,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:54:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:41,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:54:41,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617917919] [2022-11-03 01:54:41,099 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 01:54:41,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191375997] [2022-11-03 01:54:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:41,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:54:41,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:54:41,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:54:41,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:54:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:44,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 9571 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:54:44,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 01:54:44,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:54:44,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191375997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:44,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:44,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:54:44,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945426500] [2022-11-03 01:54:44,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:44,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:54:44,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:54:44,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:54:44,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:54:44,961 INFO L87 Difference]: Start difference. First operand 12755 states and 18763 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 01:54:49,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:54:54,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:55:07,303 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 [] [2022-11-03 01:55:07,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:07,989 INFO L93 Difference]: Finished difference Result 37691 states and 55450 transitions. [2022-11-03 01:55:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:55:07,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 145 [2022-11-03 01:55:07,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:08,235 INFO L225 Difference]: With dead ends: 37691 [2022-11-03 01:55:08,235 INFO L226 Difference]: Without dead ends: 24939 [2022-11-03 01:55:08,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:55:08,376 INFO L413 NwaCegarLoop]: 6784 mSDtfsCounter, 4421 mSDsluCounter, 4673 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4424 SdHoareTripleChecker+Valid, 11010 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:08,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4424 Valid, 11010 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1139 Invalid, 3 Unknown, 0 Unchecked, 21.9s Time] [2022-11-03 01:55:08,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24939 states. [2022-11-03 01:55:10,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24939 to 24928. [2022-11-03 01:55:10,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24928 states, 14815 states have (on average 1.2961187985150187) internal successors, (19202), 15522 states have internal predecessors, (19202), 8590 states have call successors, (8590), 1530 states have call predecessors, (8590), 1522 states have return successors, (8817), 8533 states have call predecessors, (8817), 8589 states have call successors, (8817) [2022-11-03 01:55:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24928 states to 24928 states and 36609 transitions. [2022-11-03 01:55:10,512 INFO L78 Accepts]: Start accepts. Automaton has 24928 states and 36609 transitions. Word has length 145 [2022-11-03 01:55:10,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:10,514 INFO L495 AbstractCegarLoop]: Abstraction has 24928 states and 36609 transitions. [2022-11-03 01:55:10,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 01:55:10,515 INFO L276 IsEmpty]: Start isEmpty. Operand 24928 states and 36609 transitions. [2022-11-03 01:55:10,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-03 01:55:10,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:10,558 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 3, 3, 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] [2022-11-03 01:55:10,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:10,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:10,777 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:10,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:10,777 INFO L85 PathProgramCache]: Analyzing trace with hash -257181830, now seen corresponding path program 1 times [2022-11-03 01:55:10,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:10,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422498565] [2022-11-03 01:55:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:10,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:11,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:11,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422498565] [2022-11-03 01:55:11,545 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 01:55:11,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37904041] [2022-11-03 01:55:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:11,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:11,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:11,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:55:11,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:55:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:14,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 9779 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:55:14,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-03 01:55:15,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:15,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37904041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:15,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:15,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:55:15,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541830545] [2022-11-03 01:55:15,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:15,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:55:15,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:15,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:55:15,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:55:15,715 INFO L87 Difference]: Start difference. First operand 24928 states and 36609 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-03 01:55:20,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:55:23,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:55:31,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:31,886 INFO L93 Difference]: Finished difference Result 62417 states and 91674 transitions. [2022-11-03 01:55:31,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:55:31,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 171 [2022-11-03 01:55:31,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:32,202 INFO L225 Difference]: With dead ends: 62417 [2022-11-03 01:55:32,202 INFO L226 Difference]: Without dead ends: 37492 [2022-11-03 01:55:32,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:55:32,325 INFO L413 NwaCegarLoop]: 5338 mSDtfsCounter, 4580 mSDsluCounter, 4650 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4582 SdHoareTripleChecker+Valid, 9541 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:32,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4582 Valid, 9541 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 964 Invalid, 1 Unknown, 0 Unchecked, 14.8s Time] [2022-11-03 01:55:32,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37492 states. [2022-11-03 01:55:34,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37492 to 37481. [2022-11-03 01:55:34,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37481 states, 22277 states have (on average 1.2961350271580554) internal successors, (28874), 23335 states have internal predecessors, (28874), 12907 states have call successors, (12907), 2308 states have call predecessors, (12907), 2296 states have return successors, (13242), 12823 states have call predecessors, (13242), 12906 states have call successors, (13242) [2022-11-03 01:55:35,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37481 states to 37481 states and 55023 transitions. [2022-11-03 01:55:35,121 INFO L78 Accepts]: Start accepts. Automaton has 37481 states and 55023 transitions. Word has length 171 [2022-11-03 01:55:35,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:35,124 INFO L495 AbstractCegarLoop]: Abstraction has 37481 states and 55023 transitions. [2022-11-03 01:55:35,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-03 01:55:35,124 INFO L276 IsEmpty]: Start isEmpty. Operand 37481 states and 55023 transitions. [2022-11-03 01:55:35,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-03 01:55:35,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:35,161 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 3, 3, 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] [2022-11-03 01:55:35,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:35,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-03 01:55:35,374 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:35,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:35,375 INFO L85 PathProgramCache]: Analyzing trace with hash -8295972, now seen corresponding path program 1 times [2022-11-03 01:55:35,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:35,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649873145] [2022-11-03 01:55:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:35,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:36,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:36,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649873145] [2022-11-03 01:55:36,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 01:55:36,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785548814] [2022-11-03 01:55:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:36,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:36,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:36,134 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:55:36,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:55:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:39,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 9779 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:55:39,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:39,622 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-03 01:55:39,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:39,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785548814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:39,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:39,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:55:39,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631636410] [2022-11-03 01:55:39,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:39,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:55:39,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:39,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:55:39,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:55:39,629 INFO L87 Difference]: Start difference. First operand 37481 states and 55023 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 01:55:47,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:55:50,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:00,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:00,005 INFO L93 Difference]: Finished difference Result 74982 states and 110073 transitions. [2022-11-03 01:56:00,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:56:00,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 171 [2022-11-03 01:56:00,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:00,251 INFO L225 Difference]: With dead ends: 74982 [2022-11-03 01:56:00,252 INFO L226 Difference]: Without dead ends: 37495 [2022-11-03 01:56:00,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:56:00,610 INFO L413 NwaCegarLoop]: 4281 mSDtfsCounter, 10 mSDsluCounter, 9459 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 12840 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:00,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 12840 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1364 Invalid, 1 Unknown, 0 Unchecked, 18.6s Time] [2022-11-03 01:56:00,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37495 states. [2022-11-03 01:56:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37495 to 37484. [2022-11-03 01:56:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37484 states, 22280 states have (on average 1.2959605026929981) internal successors, (28874), 23338 states have internal predecessors, (28874), 12907 states have call successors, (12907), 2308 states have call predecessors, (12907), 2296 states have return successors, (13242), 12823 states have call predecessors, (13242), 12906 states have call successors, (13242) [2022-11-03 01:56:03,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37484 states to 37484 states and 55023 transitions. [2022-11-03 01:56:03,370 INFO L78 Accepts]: Start accepts. Automaton has 37484 states and 55023 transitions. Word has length 171 [2022-11-03 01:56:03,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:03,376 INFO L495 AbstractCegarLoop]: Abstraction has 37484 states and 55023 transitions. [2022-11-03 01:56:03,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 01:56:03,377 INFO L276 IsEmpty]: Start isEmpty. Operand 37484 states and 55023 transitions. [2022-11-03 01:56:03,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 01:56:03,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:03,413 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:56:03,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:03,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:03,626 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:03,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:03,627 INFO L85 PathProgramCache]: Analyzing trace with hash -953172057, now seen corresponding path program 1 times [2022-11-03 01:56:03,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:03,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813908161] [2022-11-03 01:56:03,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:03,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:03,976 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:56:03,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833008553] [2022-11-03 01:56:03,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:03,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:03,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:03,979 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:03,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:56:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:07,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 9886 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:56:07,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-03 01:56:07,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:07,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:07,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813908161] [2022-11-03 01:56:07,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:56:07,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833008553] [2022-11-03 01:56:07,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833008553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:07,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:07,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:56:07,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878011677] [2022-11-03 01:56:07,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:07,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:56:07,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:07,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:56:07,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:56:07,693 INFO L87 Difference]: Start difference. First operand 37484 states and 55023 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 01:56:13,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:15,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:22,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:56:32,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:33,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:35,692 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 [] [2022-11-03 01:56:38,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:38,098 INFO L93 Difference]: Finished difference Result 62442 states and 91617 transitions. [2022-11-03 01:56:38,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:56:38,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 182 [2022-11-03 01:56:38,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:38,281 INFO L225 Difference]: With dead ends: 62442 [2022-11-03 01:56:38,281 INFO L226 Difference]: Without dead ends: 24937 [2022-11-03 01:56:38,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:38,640 INFO L413 NwaCegarLoop]: 4282 mSDtfsCounter, 22 mSDsluCounter, 14187 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 17119 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:38,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 17119 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1819 Invalid, 4 Unknown, 0 Unchecked, 29.1s Time] [2022-11-03 01:56:38,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24937 states. [2022-11-03 01:56:39,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24937 to 24860. [2022-11-03 01:56:39,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24860 states, 14780 states have (on average 1.295466847090663) internal successors, (19147), 15488 states have internal predecessors, (19147), 8554 states have call successors, (8554), 1533 states have call predecessors, (8554), 1525 states have return successors, (8771), 8496 states have call predecessors, (8771), 8553 states have call successors, (8771) [2022-11-03 01:56:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24860 states to 24860 states and 36472 transitions. [2022-11-03 01:56:40,126 INFO L78 Accepts]: Start accepts. Automaton has 24860 states and 36472 transitions. Word has length 182 [2022-11-03 01:56:40,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:40,126 INFO L495 AbstractCegarLoop]: Abstraction has 24860 states and 36472 transitions. [2022-11-03 01:56:40,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 01:56:40,127 INFO L276 IsEmpty]: Start isEmpty. Operand 24860 states and 36472 transitions. [2022-11-03 01:56:40,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 01:56:40,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:40,156 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 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] [2022-11-03 01:56:40,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:40,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:40,382 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:40,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:40,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1590908263, now seen corresponding path program 1 times [2022-11-03 01:56:40,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:40,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358401253] [2022-11-03 01:56:40,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:40,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:40,884 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:56:40,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98790172] [2022-11-03 01:56:40,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:40,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:40,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:40,886 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:40,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 01:56:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:43,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 9951 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:56:43,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 40 proven. 16 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-03 01:56:46,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:49,341 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-11-03 01:56:49,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:49,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358401253] [2022-11-03 01:56:49,342 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:56:49,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98790172] [2022-11-03 01:56:49,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98790172] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:49,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:56:49,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2022-11-03 01:56:49,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510759870] [2022-11-03 01:56:49,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:49,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:56:49,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:49,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:56:49,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:56:49,345 INFO L87 Difference]: Start difference. First operand 24860 states and 36472 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 01:56:53,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:02,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:57:39,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:48,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:50,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:58,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:58,762 INFO L93 Difference]: Finished difference Result 38965 states and 57472 transitions. [2022-11-03 01:57:58,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:57:58,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 182 [2022-11-03 01:57:58,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:58,903 INFO L225 Difference]: With dead ends: 38965 [2022-11-03 01:57:58,903 INFO L226 Difference]: Without dead ends: 38945 [2022-11-03 01:57:58,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 357 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:57:58,919 INFO L413 NwaCegarLoop]: 5031 mSDtfsCounter, 6858 mSDsluCounter, 7668 mSDsCounter, 0 mSdLazyCounter, 7296 mSolverCounterSat, 1267 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7805 SdHoareTripleChecker+Valid, 11889 SdHoareTripleChecker+Invalid, 8566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1267 IncrementalHoareTripleChecker+Valid, 7296 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:58,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7805 Valid, 11889 Invalid, 8566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1267 Valid, 7296 Invalid, 3 Unknown, 0 Unchecked, 67.8s Time] [2022-11-03 01:57:58,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38945 states. [2022-11-03 01:58:00,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38945 to 38928. [2022-11-03 01:58:00,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38928 states, 23111 states have (on average 1.2916792869196487) internal successors, (29852), 24192 states have internal predecessors, (29852), 13409 states have call successors, (13409), 2298 states have call predecessors, (13409), 2407 states have return successors, (14159), 13459 states have call predecessors, (14159), 13408 states have call successors, (14159) [2022-11-03 01:58:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38928 states to 38928 states and 57420 transitions. [2022-11-03 01:58:00,981 INFO L78 Accepts]: Start accepts. Automaton has 38928 states and 57420 transitions. Word has length 182 [2022-11-03 01:58:00,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:00,983 INFO L495 AbstractCegarLoop]: Abstraction has 38928 states and 57420 transitions. [2022-11-03 01:58:00,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 01:58:00,984 INFO L276 IsEmpty]: Start isEmpty. Operand 38928 states and 57420 transitions. [2022-11-03 01:58:01,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-03 01:58:01,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:01,020 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 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] [2022-11-03 01:58:01,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:01,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:01,247 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:01,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:01,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1149690721, now seen corresponding path program 1 times [2022-11-03 01:58:01,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:01,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792972461] [2022-11-03 01:58:01,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:01,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:01,568 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:58:01,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116139607] [2022-11-03 01:58:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:01,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:01,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:01,570 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:01,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 01:58:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:04,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 9956 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:58:04,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 01:58:04,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:58:04,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:04,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792972461] [2022-11-03 01:58:04,931 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:58:04,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116139607] [2022-11-03 01:58:04,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116139607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:04,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:04,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:04,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492288421] [2022-11-03 01:58:04,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:04,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:04,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:04,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:04,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:04,935 INFO L87 Difference]: Start difference. First operand 38928 states and 57420 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 01:58:10,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:58:17,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:18,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:18,930 INFO L93 Difference]: Finished difference Result 53083 states and 78819 transitions. [2022-11-03 01:58:18,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:18,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 185 [2022-11-03 01:58:18,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:19,153 INFO L225 Difference]: With dead ends: 53083 [2022-11-03 01:58:19,153 INFO L226 Difference]: Without dead ends: 38940 [2022-11-03 01:58:19,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:19,395 INFO L413 NwaCegarLoop]: 4283 mSDtfsCounter, 4 mSDsluCounter, 4727 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 8560 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:19,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 8560 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 904 Invalid, 1 Unknown, 0 Unchecked, 12.8s Time] [2022-11-03 01:58:19,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38940 states. [2022-11-03 01:58:20,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38940 to 38940. [2022-11-03 01:58:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38940 states, 23123 states have (on average 1.291527915927864) internal successors, (29864), 24204 states have internal predecessors, (29864), 13409 states have call successors, (13409), 2298 states have call predecessors, (13409), 2407 states have return successors, (14159), 13459 states have call predecessors, (14159), 13408 states have call successors, (14159) [2022-11-03 01:58:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38940 states to 38940 states and 57432 transitions. [2022-11-03 01:58:21,134 INFO L78 Accepts]: Start accepts. Automaton has 38940 states and 57432 transitions. Word has length 185 [2022-11-03 01:58:21,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:21,134 INFO L495 AbstractCegarLoop]: Abstraction has 38940 states and 57432 transitions. [2022-11-03 01:58:21,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 01:58:21,135 INFO L276 IsEmpty]: Start isEmpty. Operand 38940 states and 57432 transitions. [2022-11-03 01:58:21,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-03 01:58:21,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:21,158 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 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] [2022-11-03 01:58:21,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:21,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:21,375 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:21,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:21,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1860082350, now seen corresponding path program 1 times [2022-11-03 01:58:21,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:21,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621109003] [2022-11-03 01:58:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:21,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:21,705 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:58:21,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331905991] [2022-11-03 01:58:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:21,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:21,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:21,707 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:21,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 01:58:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:24,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 9964 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:58:24,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:26,789 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 52 proven. 16 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-03 01:58:26,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-11-03 01:58:30,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:30,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621109003] [2022-11-03 01:58:30,658 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:58:30,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331905991] [2022-11-03 01:58:30,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331905991] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:30,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:58:30,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2022-11-03 01:58:30,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760538179] [2022-11-03 01:58:30,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:30,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:58:30,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:30,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:58:30,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:58:30,660 INFO L87 Difference]: Start difference. First operand 38940 states and 57432 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-03 01:58:54,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:59:26,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:28,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:52,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:00,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:03,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:04,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:07,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:15,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:17,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:26,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:28,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:38,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:40,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:51,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:51,516 INFO L93 Difference]: Finished difference Result 80440 states and 119489 transitions. [2022-11-03 02:00:51,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:00:51,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) Word has length 186 [2022-11-03 02:00:51,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:51,929 INFO L225 Difference]: With dead ends: 80440 [2022-11-03 02:00:51,929 INFO L226 Difference]: Without dead ends: 41427 [2022-11-03 02:00:52,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 360 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:00:52,120 INFO L413 NwaCegarLoop]: 4885 mSDtfsCounter, 7123 mSDsluCounter, 6267 mSDsCounter, 0 mSdLazyCounter, 14852 mSolverCounterSat, 1313 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8210 SdHoareTripleChecker+Valid, 10362 SdHoareTripleChecker+Invalid, 16172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1313 IncrementalHoareTripleChecker+Valid, 14852 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 137.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:52,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8210 Valid, 10362 Invalid, 16172 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1313 Valid, 14852 Invalid, 7 Unknown, 0 Unchecked, 137.7s Time] [2022-11-03 02:00:52,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41427 states. [2022-11-03 02:00:53,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41427 to 39724. [2022-11-03 02:00:53,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39724 states, 23581 states have (on average 1.2902760697171451) internal successors, (30426), 24682 states have internal predecessors, (30426), 13679 states have call successors, (13679), 2298 states have call predecessors, (13679), 2463 states have return successors, (14399), 13789 states have call predecessors, (14399), 13678 states have call successors, (14399) [2022-11-03 02:00:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39724 states to 39724 states and 58504 transitions. [2022-11-03 02:00:54,202 INFO L78 Accepts]: Start accepts. Automaton has 39724 states and 58504 transitions. Word has length 186 [2022-11-03 02:00:54,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:54,203 INFO L495 AbstractCegarLoop]: Abstraction has 39724 states and 58504 transitions. [2022-11-03 02:00:54,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-03 02:00:54,203 INFO L276 IsEmpty]: Start isEmpty. Operand 39724 states and 58504 transitions. [2022-11-03 02:00:54,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-03 02:00:54,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:54,238 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:54,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:54,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 02:00:54,467 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:54,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:54,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1811702728, now seen corresponding path program 1 times [2022-11-03 02:00:54,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:54,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593913677] [2022-11-03 02:00:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:54,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:55,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:55,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593913677] [2022-11-03 02:00:55,156 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 02:00:55,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368434445] [2022-11-03 02:00:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:55,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:00:55,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:00:55,158 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:00:55,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:00:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:58,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 9705 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:00:58,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-03 02:00:58,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:00:58,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368434445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:58,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:58,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:58,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576182175] [2022-11-03 02:00:58,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:58,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:58,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:58,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:58,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:58,479 INFO L87 Difference]: Start difference. First operand 39724 states and 58504 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:01:03,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:07,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:01:10,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:18,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:19,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:19,991 INFO L93 Difference]: Finished difference Result 85482 states and 125653 transitions. [2022-11-03 02:01:19,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:19,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 224 [2022-11-03 02:01:19,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:20,245 INFO L225 Difference]: With dead ends: 85482 [2022-11-03 02:01:20,246 INFO L226 Difference]: Without dead ends: 45761 [2022-11-03 02:01:20,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:20,614 INFO L413 NwaCegarLoop]: 5831 mSDtfsCounter, 3504 mSDsluCounter, 4717 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3507 SdHoareTripleChecker+Valid, 10104 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:20,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3507 Valid, 10104 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1042 Invalid, 3 Unknown, 0 Unchecked, 19.5s Time] [2022-11-03 02:01:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45761 states. [2022-11-03 02:01:22,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45761 to 45679. [2022-11-03 02:01:22,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45679 states, 27240 states have (on average 1.2922173274596183) internal successors, (35200), 28463 states have internal predecessors, (35200), 15535 states have call successors, (15535), 2713 states have call predecessors, (15535), 2903 states have return successors, (16307), 15679 states have call predecessors, (16307), 15534 states have call successors, (16307) [2022-11-03 02:01:22,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45679 states to 45679 states and 67042 transitions. [2022-11-03 02:01:22,857 INFO L78 Accepts]: Start accepts. Automaton has 45679 states and 67042 transitions. Word has length 224 [2022-11-03 02:01:22,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:22,858 INFO L495 AbstractCegarLoop]: Abstraction has 45679 states and 67042 transitions. [2022-11-03 02:01:22,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:01:22,858 INFO L276 IsEmpty]: Start isEmpty. Operand 45679 states and 67042 transitions. [2022-11-03 02:01:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 02:01:23,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:23,158 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:23,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-03 02:01:23,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 02:01:23,375 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:23,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:23,375 INFO L85 PathProgramCache]: Analyzing trace with hash -29418481, now seen corresponding path program 1 times [2022-11-03 02:01:23,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:23,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4353233] [2022-11-03 02:01:23,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:23,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:23,702 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:01:23,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [104957710] [2022-11-03 02:01:23,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:23,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:23,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:23,707 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:01:23,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 02:01:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:26,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 10085 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:01:26,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 02:01:27,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:01:27,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:27,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4353233] [2022-11-03 02:01:27,210 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:01:27,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104957710] [2022-11-03 02:01:27,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104957710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:27,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:27,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:27,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144017917] [2022-11-03 02:01:27,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:27,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:27,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:27,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:27,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:27,213 INFO L87 Difference]: Start difference. First operand 45679 states and 67042 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-03 02:01:31,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:36,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:01:40,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:43,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:45,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:45,617 INFO L93 Difference]: Finished difference Result 91553 states and 134625 transitions. [2022-11-03 02:01:45,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:45,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 261 [2022-11-03 02:01:45,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:45,934 INFO L225 Difference]: With dead ends: 91553 [2022-11-03 02:01:45,934 INFO L226 Difference]: Without dead ends: 45952 [2022-11-03 02:01:46,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:46,126 INFO L413 NwaCegarLoop]: 4309 mSDtfsCounter, 51 mSDsluCounter, 4683 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 8547 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:46,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 8547 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 904 Invalid, 3 Unknown, 0 Unchecked, 16.3s Time] [2022-11-03 02:01:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45952 states. [2022-11-03 02:01:48,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45952 to 45733. [2022-11-03 02:01:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45733 states, 27285 states have (on average 1.2920652373098773) internal successors, (35254), 28508 states have internal predecessors, (35254), 15544 states have call successors, (15544), 2713 states have call predecessors, (15544), 2903 states have return successors, (16316), 15688 states have call predecessors, (16316), 15543 states have call successors, (16316) [2022-11-03 02:01:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45733 states to 45733 states and 67114 transitions. [2022-11-03 02:01:48,577 INFO L78 Accepts]: Start accepts. Automaton has 45733 states and 67114 transitions. Word has length 261 [2022-11-03 02:01:48,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:48,580 INFO L495 AbstractCegarLoop]: Abstraction has 45733 states and 67114 transitions. [2022-11-03 02:01:48,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-03 02:01:48,581 INFO L276 IsEmpty]: Start isEmpty. Operand 45733 states and 67114 transitions. [2022-11-03 02:01:48,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-03 02:01:48,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:48,617 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:48,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-03 02:01:48,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:48,842 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:48,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:48,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1227939641, now seen corresponding path program 1 times [2022-11-03 02:01:48,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:48,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261786259] [2022-11-03 02:01:48,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:48,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:49,124 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:01:49,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597899284] [2022-11-03 02:01:49,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:49,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:49,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:49,127 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:01:49,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 02:01:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:52,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 10104 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:01:52,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:52,627 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 02:01:52,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:01:52,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:52,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261786259] [2022-11-03 02:01:52,628 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:01:52,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597899284] [2022-11-03 02:01:52,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597899284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:52,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:52,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:01:52,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961661834] [2022-11-03 02:01:52,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:52,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:01:52,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:52,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:01:52,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:01:52,632 INFO L87 Difference]: Start difference. First operand 45733 states and 67114 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-03 02:02:02,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:02:12,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:16,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:16,181 INFO L93 Difference]: Finished difference Result 91492 states and 135529 transitions. [2022-11-03 02:02:16,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:02:16,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) Word has length 262 [2022-11-03 02:02:16,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:16,552 INFO L225 Difference]: With dead ends: 91492 [2022-11-03 02:02:16,552 INFO L226 Difference]: Without dead ends: 45837 [2022-11-03 02:02:16,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:16,693 INFO L413 NwaCegarLoop]: 4282 mSDtfsCounter, 2 mSDsluCounter, 14184 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17113 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:16,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17113 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1825 Invalid, 1 Unknown, 0 Unchecked, 21.8s Time] [2022-11-03 02:02:16,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45837 states. [2022-11-03 02:02:18,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45837 to 45793. [2022-11-03 02:02:18,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45793 states, 27330 states have (on average 1.2915843395536042) internal successors, (35299), 28553 states have internal predecessors, (35299), 15544 states have call successors, (15544), 2713 states have call predecessors, (15544), 2918 states have return successors, (16412), 15703 states have call predecessors, (16412), 15543 states have call successors, (16412) [2022-11-03 02:02:19,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45793 states to 45793 states and 67255 transitions. [2022-11-03 02:02:19,145 INFO L78 Accepts]: Start accepts. Automaton has 45793 states and 67255 transitions. Word has length 262 [2022-11-03 02:02:19,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:19,146 INFO L495 AbstractCegarLoop]: Abstraction has 45793 states and 67255 transitions. [2022-11-03 02:02:19,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-03 02:02:19,146 INFO L276 IsEmpty]: Start isEmpty. Operand 45793 states and 67255 transitions. [2022-11-03 02:02:19,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-03 02:02:19,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:19,182 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:19,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:19,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:19,410 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:19,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:19,411 INFO L85 PathProgramCache]: Analyzing trace with hash -879453351, now seen corresponding path program 1 times [2022-11-03 02:02:19,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:19,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11208312] [2022-11-03 02:02:19,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:19,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:19,639 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:02:19,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679105743] [2022-11-03 02:02:19,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:19,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:19,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:19,642 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:02:19,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 02:02:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:23,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 10145 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:02:23,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-03 02:02:23,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:23,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:23,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11208312] [2022-11-03 02:02:23,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:02:23,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679105743] [2022-11-03 02:02:23,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679105743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:23,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:23,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:23,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88768886] [2022-11-03 02:02:23,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:23,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:23,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:23,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:23,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:23,414 INFO L87 Difference]: Start difference. First operand 45793 states and 67255 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-03 02:02:30,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:02:33,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:38,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:39,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:39,956 INFO L93 Difference]: Finished difference Result 93018 states and 136875 transitions. [2022-11-03 02:02:39,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:39,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 266 [2022-11-03 02:02:39,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:40,158 INFO L225 Difference]: With dead ends: 93018 [2022-11-03 02:02:40,158 INFO L226 Difference]: Without dead ends: 47303 [2022-11-03 02:02:40,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:40,431 INFO L413 NwaCegarLoop]: 4477 mSDtfsCounter, 218 mSDsluCounter, 4613 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 8660 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:40,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 8660 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 904 Invalid, 2 Unknown, 0 Unchecked, 14.7s Time] [2022-11-03 02:02:40,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47303 states. [2022-11-03 02:02:42,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47303 to 45838. [2022-11-03 02:02:42,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45838 states, 27357 states have (on average 1.2912965602953541) internal successors, (35326), 28580 states have internal predecessors, (35326), 15562 states have call successors, (15562), 2713 states have call predecessors, (15562), 2918 states have return successors, (16430), 15721 states have call predecessors, (16430), 15561 states have call successors, (16430) [2022-11-03 02:02:43,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45838 states to 45838 states and 67318 transitions. [2022-11-03 02:02:43,076 INFO L78 Accepts]: Start accepts. Automaton has 45838 states and 67318 transitions. Word has length 266 [2022-11-03 02:02:43,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:43,076 INFO L495 AbstractCegarLoop]: Abstraction has 45838 states and 67318 transitions. [2022-11-03 02:02:43,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-03 02:02:43,076 INFO L276 IsEmpty]: Start isEmpty. Operand 45838 states and 67318 transitions. [2022-11-03 02:02:43,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-03 02:02:43,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:43,101 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:43,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:43,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 02:02:43,302 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:43,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:43,303 INFO L85 PathProgramCache]: Analyzing trace with hash -342955903, now seen corresponding path program 1 times [2022-11-03 02:02:43,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:43,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472302035] [2022-11-03 02:02:43,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:43,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:43,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:43,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472302035] [2022-11-03 02:02:43,732 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 02:02:43,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348796186] [2022-11-03 02:02:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:43,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:43,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:43,734 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:02:43,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9e0e59-cad7-4c39-97c7-d8f81923ad41/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 02:02:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:47,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 10272 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:02:47,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:47,209 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-03 02:02:47,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:47,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348796186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:47,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:47,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:47,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633442449] [2022-11-03 02:02:47,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:47,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:47,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:47,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:47,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:47,212 INFO L87 Difference]: Start difference. First operand 45838 states and 67318 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 3 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-03 02:02:53,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:02:56,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:02,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:02,557 INFO L93 Difference]: Finished difference Result 93108 states and 137001 transitions. [2022-11-03 02:03:02,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:02,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 3 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 279 [2022-11-03 02:03:02,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted.